Given that \( \boldsymbol{P}+\mathbf{Q}+\mathbf{R}=\mathbf{0} \). T...

Given that \( \boldsymbol{P}+\mathbf{Q}+\mathbf{R}=\mathbf{0} \). Two aut of the three vectors are equal in magnitucir. The magnitude of the third vector is \( \sqrt{2} \) times that of the other two. Which of the followimg can he the angles hetwern these vectors?
(a) \( 90^{\circ}, 135^{\circ}, 135^{\circ} \)
(b) \( 45^{\circ}, 45^{\circ}, 90^{\circ} \)
(c) \( 30^{\circ}, 60^{\circ}, 90^{\circ} \)
(d) \( 45^{\circ}, 90^{\circ}, 135^{\circ} \)