A local theater sold 624 tickets for a recent performance. If the tickets were $3.00 each, how much money did it collect? 
 Shelia said $208. 
 Is Shelia's answer reasonable?
 a. Yes, because 600 ÷ 3 = 200, and 624 tickets were sold, so the answer will be a little more than this estimate.
 b. Yes, because 630 ÷ 3 = 210, and 624 tickets were sold, so the answer will be a little less than this estimate.
 c. No, because 600 • 3 = 1800, and 624 tickets were sold, so the answer will be a little less than this estimate.
 d. No, because 600 • 3 = 1800, and 624