Show that for arbitrary vectors (u), (v), and (w), (u × (v × w) = (u × v) × w).
a) (u × (v × w) = u × (w × v))
b) (u × (v × w) = u × (v × w))
c) (u × (v × w) = (u × v) × w)
d) (u × (v × w) = (v × u) × w)