Mark the letter A B C or D on your answer sheet to indicate the correct answer to the following question, Mark the letter A; B; C or D on your answer sheet to indicate the correct answer to the following question, Mark the letter A. B. C or D on your answer sheet to indicate the correct answer to the following question., Mark the letter A. B. C or D on your answer sheet to indicate the correct answer to the following question, Mark the letter A. B. C. or D on your answer sheet to indicate the correct answer to the following question.