ધારો કે $\vec{a}=2 \hat{i}+3 \hat{j}+\hat{k}$,$\vec{b}=4 \hat{i}+\hat{j}$,$\vec{c}=\hat{i}-3 \hat{j}-7 \hat{k}$. જો $\vec{r}=x \hat{i}+y \hat{j}+z \hat{k}$,$\vec{r} \cdot \vec{a}=9$,$\vec{r} \cdot \vec{b}=7$,$\vec{r} \cdot \vec{c}=6$ હોય,તો $(x, y, z) = $

• A
  $(1, -3, 2)$
• B
  $(-1, 3, -2)$
• C
  $(1, 3, 2)$
• D
  $(1, 3, -2)$