Ms. Whipple asked her sixth grade students what after-school sport they participated in. She kept track of their answers and created this table Based on the ratios from Ms. Whipple's class which proportion could be used to find r the number of students expected to participate in soccer, if there are a total of 350 sixth graders at the school?

a- 22/11 = r/ 350 - 22

b- r/350 = 11/22 - 11

c- 11/22 = r/350

d- r/22 = 11/350