Subtract
- $\left(0.7 x^{4}-0.8 x^{3}+0.9\right)-\left(4.6 x^{4}+2.1 x-1.3\right)$ A) $-3.9 x^{4}-0.8 x^{3}-2.1 x+2.2$

Multiple Choice

Subtract.
- $\left(0.7 x^{4}-0.8 x^{3}+0.9\right) -\left(4.6 x^{4}+2.1 x-1.3\right)$

A) $-3.9 x^{4}-0.8 x^{3}-2.1 x+2.2$
B) $-3.9 x^{4}-0.8 x^{3}-2.1 x-0.4$
C) $-3.9 x^{4}-0.8 x^{3}+2.1 x+2.2$
D) $-3.9 x^{4}-0.9 x^{3}-0.4$