Two blocks with the same mass are released from the top of two inclined planes of the same height. Block A is released from an incline making 30-degree angles with the horizontal, while Block B is released from an incline making a 60-degree angle with the horizontal. The coefficient of friction is the same for both. Which of the blocks is going faster when it reaches the bottom of its respective incline?

a We must know the actual masses of the blocks to answer.
b Block A is faster.
c Both blocks have the same speed at the bottom.
d Block B is faster.
e There is not enough information to answer the question because we do not know the value of the coefficient of kinetic friction.