In the following numberseries, two numbers have been put within brackets. Study the series carefully and select the correct alternative with respect to the series.
1, 1, 2, 6, 24, (121), 720, (5040), 40320

A

The first bracketed number (from the left) is correct and the second is incorrect.

B

The first bracketed number (from the left) is incorrect and the second is correct.

C

Both the bracketed numbers are in correct.

D

Both the bracketed numbers are correct.