A students work to simplify a radical is shown below. Select the statement which applies to the sample mathematical work 3^ √54 = 3 3^ √27.2
3^ √27.2 = 3 3^ √2
Thus 3 √54 = 3 3^ √2

A. The equality 3 √54 = 3^ √27.2 is incorrect or invalid
B. Removing the 27 from under the radical in the second step is incorrect or invalid
C. The work shown above is correct, however 3 3^ √2 may be simplified further.
D. The work shown above is correct, and 3 3^ √2 may not be be simplified further