A Body Moves Through Space with a Certain Speed

A body moves through space with a certain speed. How many forces are needed to make this object move in a circle?

A) two, one inward, the other outward away from the center of the circle
B) only one force along the circular path and tangential to it
C) two, one inward toward the center of the circle, the second tangential to the circle to keep the object moving
D) only one, toward the center of the circle