Learn about new technologies!

What is the correct answer?


The four types of mail merge main documents are ...

A. Form letters, directories, catalogues and envelope

B. Form letters, envelops and mailing labels, directories and lists

C. Basic letters, envelops, labels and list

D. Form letters, envelops, mailing labels and catalogue

Please do not use chat terms. Example: avoid using "grt" instead of "great".