Which Would Require the Least Force to Move a Box

Multiple Choice

Which would require the least force to move a box along a floor with a coefficient of friction of 0.30?

A) pull it with a rope at an angle of 30° above the horizontal
B) push it at an angle of 30° below the horizontal
C) either pull it with a rope at an angle of 30° above the horizontal or push it at an angle of 30° below the horizontal
D) not enough information to solve