If a student took the SAT in October last year, be has to take another test if he applies for ________.

A．Students who have taken the old test are strongly advised not to take the new test.
B．As compared with the old test, the new one requires the student to write an essay in a shorter period of time.
C．The College Board has decided to invite university teachers to grade the essays.
D．The College Board has appealed to many universities to support the new examination.