ANSWER
C
E
F
Step-by-step explanation
The result of the synthetic division is :
3 -1 0
The last number is the remainder which is 0
The first two numbers are the coefficients of the quotient.
Therefore the quotient is 3x -1
Since the remainder is 0, x-4 is a factor of

This also means that:

This again means that x=4 is a root of

The correct choices are C,E and F.