If a doctor works call, then that doctor cannot work clinic the next day. which statement below is equivalent to the one above? explain your answer.
a. if a doctor works clinic, then that doctor cannot work call the next day
b. if a doctor works clinic, then that doctor cannot work call the previous day
c. if a doctor is not on clinic, then that doctor must be on call the previous day
d. if a doctor is not on call, then that doctor must be on clinic the next day
