In an Experiment, Group a Is Asked to Read a Passage

In an experiment, Group A is asked to read a passage. Group B is asked to read the same passage but is given a prologue that helps their understanding of the passage. When given a recall test,

A) Group A recalled less of the passage and made more intrusion errors than Group B.
B) Group B recalled more of the passage but made more intrusion errors than Group A.
C) Group A could not recall any of the passage as they did not understand its context.
D) Group A recalled less of the passage but made the same number of intrusion errors as Group B.