Jamila's Friends Are Participating in a Tradition Known as Senior

Jamila's friends are participating in a tradition known as Senior Sunrise, where the graduating high school class members stay out all night before the last day of school. Jamila's parents set her a curfew of 12 midnight (which was very generous) , and Jamila made sure to be home by then. However, she receives a text message at 3 a.m. from her best friend asking her to come back and join in the celebrations. Jamila now needs to solve a problem: Should she obey her parents and stay home, or should she sneak out and join her friends?
-While making a plan to sneak out of the house without waking her parents,Jamila remembers that her brother used to sneak out his window because of the squeaky stair on the staircase.If Jamila uses this solution and climbs out her window,she is _______________.

A) using a mental set
B) incorporating irrelevant information
C) placing unnecessary restraints on her solution
D) too focused on functional fixedness