Seven rugby players with their jersey codes – K1A,

Solution

As per the given conditions, Since Q7G and P6F have 4 players between them and Q7G is to the immediate right of O5E, this means O5E is at the extreme left and Q7G is at the second place from the left. M3C is exactly at the middle position. K1A is second to the right of O5E and L2B is second to the right of K1A. This means K1A and L2B are on the immediate left and right side of M3C. Only N4D is between L2B and P6F, means P6F is at the extreme right.   Final arrangement is as shown below: From the above seating arrangement, it is clear that M3C is sitting between K1A and L2B. Hence, the correct answer is (B).