Answer:
C
Step-by-step explanation:
1,440 / 48 = 30
30 * 6 <em>does</em> = 180. Not A.
30 * 14 <em>does</em> = 420. Not B.
30 * 16 <em>does NOT </em>= 540. C could be right.
30 * 12 <em>does </em>= 360. Not D.
Thus, C is the only one and therefore the answer is C.