What should come in place of the question mark (?) in the given series?
162 184 206 228 250 ?
A262
B272
C277
D284
A262
B272
C277
D284
Related Questions:
Refer to the given letter-cluster series and answer the question that follows.
AKMG, RTDC, WQCT, PILE, VTXF, HRXW
If in each of the letter-clusters, each letter is changed to the next letter in the English alphabetical order, how many letter-clusters thus formed will have exactly two vowels?