A Sidewalk Runs Across Jermichael's Front Yard near the Street

Multiple Choice

A sidewalk runs across Jermichael's front yard near the street. By law, anyone has the right to use the sidewalk. When Jermichael shovels the sidewalk after a heavy snowstorm,

A) he is providing a good that is excludable.
B) he is a free rider.
C) those who walk on the sidewalk are using a club good.
D) he is providing a good that is not rival and not excludable.