When You Were Much Younger You Received the OPV Polio

When you were much younger you received the OPV polio vaccine and its boosters.Now you are going on a mission trip to Bangladesh and the vaccine is recommended by the Centers for Disease Control.When you go to the city health office to get the vaccine,they given you the IPV vaccine.When you ask why you are receiving the IPV rather than the OPV,the personnel there tell you:

A) the IPV is preferred by patients because it can be taken orally.
B) the IPV has fewer active viruses in it than the OPV,so they say it is safer.
C) the health facility is just out of the OPV vaccine,but if they had it that one would be the one they would prefer to use.
D) there is no possibility of actually developing polio from this vaccine.