Which answer choice has no errors in punctuation or capitalization?

A.
Stuart said. "My father thinks that I should not handle power tools until I am older".

B.
Marshall asked "do you think you could just use a regular saw instead?"

C.
"I found instructions for building a bird feeder", Replied Curtis. "The instructions recommend using a jigsaw."

D.
"So," asked Vincent, "what do you plan to build?"