12. Which sentence contains an incorrect end mark? (1 point)
A.Look at the prices on these shirts!
B.I know how much they usually cost?
C.Have you been in this shop before?
D. I want to go somewhere less expensive.
The answer is B (I know how much they usually cost?). A question mark does not belong at the end of that sentence. It is more of a statement that the person knows how much they usually cost.
