A student's work to simplify a radical is shown below. Select the statement which best applies to the sample mathematical work.
>
f
4
3
Thus,
=y W
A. The equality by23
is incorrect or invalid.
B. Removing
in the second step is incorrect or invalid.
C
The work shown above is correct, however
may be simplified further.
D
The work shown above is correct, and
may not be simplified further