Given \[\vec{A}\,=\hat{i}+\hat{j}\,+\hat{k}\] and \[\vec{B}\,=-\hat{i}-\hat{j}-\hat{k},\,(\vec{A}-\vec{B})\] will make angle with \[\vec{A}\] as

• A. \[0{}^\circ \]
• B. \[{{180}^{o}}\]
• C. \[90{}^\circ \]
• D. \[60{}^\circ \]