1.

If a sixth brand M is tested and found to be more effective than S, then which of the following must be true, if the findings of the study are correct?

A. M is the most effective of all the six brands tested
B. Atleast four of the six brands tested are less effective than M
C. M is more effective than P
D. M is less effective than P
Answer» C. M is more effective than P


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