Because it is the second to last letter.
The alphabet has 26 letters. The letter "D" comes after the letter "C".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "H" comes after the letter "I".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "N" comes after the letter "M".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "P" comes after the letter "O".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
Because it is the second to last letter.
The alphabet has 26 letters. The letter "D" comes after the letter "C".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "B" comes after the letter "A".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "I" comes after the letter "J".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "H" comes after the letter "I".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "N" comes after the letter "M".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "P" comes after the letter "O".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "P" comes after the letter "Q".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "S" comes after the letter "R".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "U" comes after the letter "T".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "W" comes after the letter "V".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ
The alphabet has 26 letters. The letter "Z" comes after the letter "Y".The English alphabet, in order:ABCDEFGHIJKLMNOPQRSTUVWXYZ