What is the benefit of using SINR as opposed to SNR to reference signal quality at a receiver?

What is the benefit of using SINR as opposed to SNR to reference signal quality at a receiver?
A . SNR excludes the noise floor, which skews the results
B . SNR includes interference measurements that skew the results
C . SINR includes interference as well as the noise floor
D . SINR excludes interference and only measures the noise floor

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Answer: C