Is the passage of dialogue written correctly or incorrectly?

Then he added, "I have a new idea for a tree house." "Will it cost a lot?" his mother asked. "I think we can do it for free," Vernon replied.

A.
correctly

B.
incorrectly

what passage are you referring to

a. conversing outside

explanation:

conversing outside is an example of a communication style.

i hope this you, and have a wonderful day!

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what is a central idea of “no filter”? what details develop this central idea? use evidence from the text to support your response. your response should be at least one complete paragraph.