Why are baseball uniforms for a professional baseball team considered an intermediate good?

There’s a question on my macro econ homework which reads:

6. Which of the following is an intermediate good?

A) the purchase of gasoline for a ski trip to Colorado. drugs without prescription

B) the purchase of baseball uniforms by a professional baseball team.

C) the purchase of a pizza by a college student.

D) the purchase of jogging shoes by a professor

The answer is C.. but why? Wouldn’t baseball uniforms be considered a final good? Please help. Thanks.