Concept:The pattern uses a custom operation: multiply the two numbers, then add their difference.Explanation:For 6+2=16, do (6×2)+(6−2)=12+4=16.For 7+3=25, do (7×3)+(7−3)=21+4=25.Apply the same rule to 8+4: multiply 8×4=32, subtract 8−4=4, then add them: 32+4=36.Answer:8+4=36, which corresponds to option C.