Mark the letter A B C or D on your answer sheet to indicate the option that best completes each of the following exchanges, Mark the letter A. B. C. or D on your answer sheet to indicate the option that best completes each of the following exchanges., Mark the letter A. B. C or D on your answer sheet to indicate the option that best completes each of the following exchanges., Mark the letter A. B.C. or D on your answer sheet to indicate the option that best completes each of the following exchanges., Mark the letter A. B. C. or D on your answer sheet to indicate the option that best completes each of the following exchanges, Mark the letter A. B. C. or D on your answer sheet to Indicate the option that best completes each of the following exchanges, Mark the letter A. B. C. or D on ỵour answer sheet to indicate the option that best completes each of the following exchanges, Mark the letter A. B. C or D on your answer sheet to indicate the option that best completes each of the following exchanges, Mark the letter A. B. c. or D on your answer sheet to indicate the option that best completes each of the following exchanges., Mark the letter A. B. C. or D on your answer sheet to Indicate the option that best completes each of the following exchanges., Mark the letter A.B.C.or D on your answer sheet to indicate the option that best completes each of the following exchanges., Mark the letter A. B. C. or D on ỵour answer sheet to indicate the option that best completes each of the following exchanges.