Complete the series by finding the missing term from the given alternatives C , E , H , L , Q , W , ?

Complete the series by finding the missing term from the given alternatives C , E , H , L , Q , W , ?

Explanation

The alphabets follow a pattern:
C+2=E
E+3=H
H+4=L
L+5=Q
Q+6=W
W+7=D
Hence, D replaces the question mark.