If $A \equiv (5, 1, p)$,$B \equiv (1, q, p)$,and $C \equiv (1, -2, 3)$ are the vertices of a triangle and $G \equiv (r, -\frac{4}{3}, \frac{1}{3})$ is its centroid,then the values of $p, q, r$ are respectively:

  • A
    $-1, 3, \frac{7}{3}$
  • B
    $1, 3, \frac{7}{3}$
  • C
    $1, -3, \frac{7}{3}$
  • D
    $-1, -3, \frac{7}{3}$

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