question_answer

If a vertex of a triangle is (1,1) and the midpoint of two sides through this vertex are \[\left( -\,1,2 \right)~\] and (3, 2), then the centroid of the triangle is

A)  \[\left( \frac{1}{3},\frac{7}{3} \right)\]               

B)  \[\left( 1,\,\,\frac{7}{3} \right)\]

C)  \[\left( -\frac{1}{3},\frac{7}{3} \right)\]              

D)  \[\left( -1,\,\,\frac{7}{3} \right)\]

E)  None of these