The position vector of the point of intersection of the medians (centroid) of a triangle,whose vertices are $A(1, 2, 3)$,$B(1, 0, 3)$,and $C(4, 1, -3)$ is

  • A
    $2 \hat{i} + \hat{j} + \hat{k}$
  • B
    $6 \hat{i} + 3 \hat{j} + 3 \hat{k}$
  • C
    $\hat{i} + \hat{j} + \hat{k}$
  • D
    $2 \hat{i} + 3 \hat{j} + \hat{k}$

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