Let $x = - 1 , y = - 2$ And $z = - 4$

Multiple Choice

Let $x = - 1 , y = - 2$ and $z = - 4$ . Find $$L = x - y - z$$

A) $L = 1$
B) $L = 5$
C) $L = - 3$
D) $L = - 7$
E) none of these