Between the first and second year of existence of a community service organization, the membership of the
organization grew by 15%. Between its second and third years of existence, the community service organization's
membership decreased by 10%. Which of the following statements best describes the overall change in
membership of the community service organization over the first three years of the organization's existence?
A. Overall membership decreased by 5 percent
B. Overall membership decreased by 3.5 percent
C. Overall membership increased by 3.5 percent
D. Overall membership increased by 5 percent
E. Overall membership increased by 12.5 percent