The ◯ represents a set of calculations that are common across all the given equations. Identify the calculations involved and solve the third equation on the same basis:

4 ◯ 3 = 16; 9; 25

6 ◯ 2 = 36; 4; 40

7 ◯ 4 = ?; ?; ?

Now, the next numbers will be : 49, 16, 65

Thus, the correct option is (c) 49, 16, 65.