Which statement best classifies Bruce's claim?

A. Bruce's claim is never true for two integers r and s.

B. Bruce's claim is true only when s is a positive integer.

C. Bruce's claim is true only when r is a positive integer.

D. Bruce's claim is always true for any two integers r and s.

A. Bruce's claim is never true for two integers r and s.

B. Bruce's claim is true only when s is a positive integer.

C. Bruce's claim is true only when r is a positive integer.

D. Bruce's claim is always true for any two integers r and s.