What is the meaning of the line, "ay, and that tongue of his that bade the romans / mark him and write his speeches in their books"?

a. caesar's powerful speeches impressed the romans, who recorded them in writing.

b. caesar spoke before he thought, so his speeches got him into trouble with the people.

c. the words of julius caesar will last as long as people remember rome.

d. when caesar lost the power of speech, he lost his most effective weapon.

think it is c.