Let $P ( x ) = x ^ { 4 } - 10 x ^ { 3 } + 6 x + 5 x ^ { 2 } - 4$

Let $P ( x ) = x ^ { 4 } - 10 x ^ { 3 } + 6 x + 5 x ^ { 2 } - 4$
Write the terms of $P ( x )$ in descending powers of $x$ .

A) $x ^ { 4 } + 5 x ^ { 2 } - 4$
B) $\quad x ^ { 4 } - 10 x ^ { 3 } + 5 x ^ { 2 } + 6 x - 4$
C) $\quad 4 - 6 x + 5 x ^ { 2 } + 10 x ^ { 3 } - x ^ { 4 }$
D) $\quad 10 x ^ { 3 } + 6 x - 4$
E) none of these