Which statement tells where a paragraph break should be in this dialogue?

"would you mind dropping this in the mailbox on your way home? " the woman asked. "no problem, mrs. daniels," the boy said. "i'd be happy to do so."

a.
a paragraph break should come after the word asked and after the word said.

b.
a paragraph break should come after the word asked.

c.
a paragraph break should come after the word said.