A National Study Reported That 76% of High School Graduates

A national study reported that 76% of high school graduates pursue a college education immediately after graduation.A private high school advertises that 156 of their 196 graduates last year went on to college.Does this school have an unusually high proportion of students going to university?

A) This school can boast an unusually high proportion of students going to university.Their proportion is 0.94 standard deviations above the mean.
B) This school cannot boast an unusually high proportion of students going to university.Their proportion is only 0.71 standard deviations above the mean.
C) This school cannot boast an unusually high proportion of students going to university.Their proportion is only 1.18 standard deviations above the mean.
D) This school cannot boast an unusually high proportion of students going to university.Their proportion is only 0.94 standard deviations above the mean.
E) This school can boast an unusually high proportion of students going to university.Their proportion is 1.41 standard deviations above the mean.