Add or Subtract $\sqrt{12 \mathrm{x}-12}+\sqrt{3 \mathrm{x}-3}$ A) $3 \sqrt{3} \sqrt{x+1}$ B) $2 \sqrt{3} \sqrt{\mathrm{x}+1}$

Multiple Choice

Add or subtract. Simplify by collecting like radical terms, if possible.
- $\sqrt{12 \mathrm{x}-12}+\sqrt{3 \mathrm{x}-3}$

A) $3 \sqrt{3} \sqrt{x+1}$
B) $2 \sqrt{3} \sqrt{\mathrm{x}+1}$
C) $2 \sqrt{3} \sqrt{\mathrm{x}-1}$
D) $3 \sqrt{3} \sqrt{x-1}$