What Is a Good Way to Manage Time in Preparation

What is a good way to manage time in preparation for your anatomy and physiology class?

A) I study only on the weekends when I have many hours of free time.
B) I should stay up all night the night before the test to maximize what is stored in short ^-term memory.
C) I should delay studying until the day or two before the test to best remember the material.
D) I make a schedule and budget my time.