Before starting a summer jobs program, the school board conducted a survey at various schools. They interviewed 30% of the high school students to know whether they would participate in the program. The results are shown in the
graph

Is this sampling method valid? If so, how many of 750 students of various high schools are likely to
participate in this
program?

A. no, 125
B. yes, 125
C. no, 625
D. yes, 625