Which word in the sentence should be followed with a semicolon ?

jan's speech was interesting and lively tim's was a bit too long .

a; interesting
b; lively
c; speech
d; tim's

I think the correct choice is D such that the sentence becomes: Jan's speech was interesting and lively; Tim's was a bit too long. This is because semicolons are typically used to link two independent clauses that are very much related. In this case the two independent clauses are: 

(1) Jan's speech was interesting and lively
(2) Tim's was a bit too long