the first drop down box says a b or c.

please tell me what to select for both

Which score indicates the highest relative position? Round your answer to two decimal places, if necessary. (a) A score of 3.3 on a test with X=4.9 and s=1.8. (b) A score of 610 on a test with X=830 and s=210. (c) A score of 39 on a test with X=53 and s=6. The score with the highest relative position is since the is highest