Find the correct alternative which will replace the question mark (?) in the second grid. First grid:5 30 5 10 Second grid:7 42 7 ?

In the first grid, the top-right number is 5 x 6 = 30 and the bottom-right number is 5 x 2 = 10. In the second grid, 7 x 6 = 42 follows the same rule, so the missing number is 7 x 2 = 14.