Memorandum can be pluralized as:
AMemorandas
BMemorandums
CMemoranda
DMemora
AMemorandas
BMemorandums
CMemoranda
DMemora
Related Questions:
Find out the Abstract noun from the following sentence:
My mother gave me some necessary advice.
All the girls students (A)/ are advised to (B)/ attend the (C)/ meeting positively.(D)