Vektor-vektor u, v, dan w tak nol dan |u|=|v|

Vektor-vektor u, v, dan w tak nol dan $$\left | u \right |=\left | v \right |\\$$. Jika $$\left | v-w \right | = \left | u-w \right |$$, maka

A
$$u.v = \left | w \right |$$
B
$$w=\frac{2u+3v}{5}$$
C
$$\left | u-w \right | = \left | v \right |$$
D
u – v tegak lurus w
E
u + v tegak lurus w

u – v tegak lurus w