Find the area of the triangle formed where vertices are A (3, -1, 2), B (1, -1, -3) and C (4, -3, 1).

Question

$(A)\; \sqrt{165} sq.units$
$(B)\; \frac{1}{2} \sqrt{165} sq.units$
$(C) 2 \sqrt{165} sq.units$
$(D) \; \frac{165}{2} sq.units$