(Choose 1 answer)
In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability that a person carries the gene is 0.1. Let X denote the number of volunteers tested until two detected with the gene. The possible values of X are:
Α. 2,3,4,...
B. 0,1,2,...
C. 0,1,2
D. 1,2,3,...
E. None of the other choices is correct
