What is the negation of each of these propositions?

a.) Steve has more than 100GB free disk space on his laptop.

b.) Zach blocks emails and texts from Jennifer.

c.) 7*11*13=999

d.) Diane rode her bicycle 100 miles on Sunday.

(A) Steve does not have more than 100 GB free disk space on his laptop.

(B) Zach does not block e-mails and text from Jennifer.

(C) 7*13*11≠ 999

(D) Diane did not ride her bicycle 100 miles on Sunday.

The opposite of a statement can be obtained by adding "not" to the given statement (note: adjust the sentence such that it remains proper English)

(C) the opposite of an equality (=) is a different (≠)