Answer
Point B
Work Step by Step
Point B is on $\overset\longleftrightarrow{AC}$ and is also on plane Q, so B is the point of intersection.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.