Why has Google determined that GPA’s and test scores are worthless for hiring? A. Because they have found that G.P.A.’s and test scores are not predictive. B. Because  GPA’s and test scores don't reflect skills in those areas that you can apply C. Because proportion of people without any college education at Google has increased over time, Google does not need people with good GPAs and hight test scores. D. Because Laszlo Bock opposes to hire people with good grades.