Answer:
Option A. His solution is accurate.
Explanation:
Charles factors the expression

Let's factorize the given expression
We will take out
common from the given expression
![(1)/(3)x[(4y)+1]](https://img.qammunity.org/2018/formulas/mathematics/college/trwf56nfzkbdlhc9k869ta3ry5pbc5r6tp.png)
After analyzing Charles process of factorizing we can conclude that his solution is accurate.
Option A. is the solution.