Which words in the sentence are the predicate nominatives?

Jennifer is both a fast runner and a strong swimmer.

Choose all answers that are correct.

Arunner
Bstrong
Cswimmer
Dfast
EJennifer

Which word in the sentence is the predicate nominative?

Helena became the capital of the state of Montana in 1889.

Acapital
BHelena
CMontana
Dstate