Jordan Michael runs a basketball camp. A group of randomly selected camp participants were asked to give their shirt size. The table below shows the results of the survey. There are 308308308 camp participants this year. Shirt size Number of participants
Small 6
Medium 15
Large 23
Extra large 12
Double extra large 4
Based on the data, what is the most reasonable estimate for the number of this year's camp participants who will need a medium shirt?

Choose 1
(Choice A)
A 21
(Choice B)
B 31
(Choice C)
C 77
(Choice D)
D 118