Isabella Spent One Hour Studying American History Prior to 1800

Isabella spent one hour studying American History prior to 1800 and then spent one hour studying European History prior to 1800. Victor spent one hour studying American History prior to 1800 and then spent one hour studying calculus. In this example, it is likely that ​

A) Victor will have better recall of events in early American History.
B) Isabella will have better recall of events in early American History. ​
C) both students will have equivalent recall of events in early American History. ​
D) neither student will have good recall of the material studied during the second hour. ​