In Problem-Solving Tasks,research Subjects Were

In problem-solving tasks,research subjects were:

A) more likely to show disapproval and frustration with their spouse than with strangers.
B) more polite and congenial to their spouse than with strangers.
C) less likely to show disapproval and frustration with their spouse than with strangers.
D) less willing to persist at the task with their spouse than with strangers.