Consider points A, B, C and D with position vectors $7 \hat{i} - 4 \hat{j} + 7 \hat{k}, \; \hat{i} - 6 \hat{j} + 10 \hat{k}, \; -\hat{i} - 3 \hat{j} + 4 \hat{k}$ and $5 \hat{i} - \hat{j} + 5 \hat{k}$ respectively. Then ABCD is a :

Question

( A ) reactangle
( B ) square
( C ) rhombus
( D ) quadrilateral