Mr. Smith has a maximum of $50 to spend at a museum. A ticket to the museum costs $7. He can spend p dollars to buy other things at the museum. Which inequality can be used to find the possible values for p? A. p - 7 > 50
B. p - 7 < 50
C. p + 7 ≥ 50
D. p + 7 ≤ 50