When you are about to start a new course, what is the best guideline to follow when setting goals?
A. Set goals that are measurable, so that you'll know when you've met them.
B. Set goals that are general, so that you'll at least accomplish them in part.
C. Set goals that are easy and simple, so that you'll always meet them.
D. Set goals that are extremely hard to reach, so that you'll aim high.