Suzie Is Using Flash Cards to Study for Her Upcoming

Suzie is using flash cards to study for her upcoming psychology test. She looks at the first card, moves it a few cards back, and then a little further back in the stack each time. Suzie is

A) using maintenance rehearsal to study for the test.
B) extending how long she remembers the information.
C) incorporating cognitive processing into her study plan.
D) using a very inefficient method of studying known as spaced practice.