When sampled 145 out of 500 people said they were vegetarians if the sample was taken from a population of 31000 people, which of the following is most likely the number of people in the population who are vegetarians?A.5890B.8990C.2790D.12,090

i think the answer is B. 

145/500=28/100
100*310=31000
28*310=8680
145/500=8680/31000

the question says which is MOST likely which gives me the impression that there will not be an exact match in the answers. apologies if its wrong.