Find n for which ( lim_{x rightarrow 0} frac{(cos(x)-1)(cos(x)-e^x)}{x^n} ), has non zero value.

Find n for which ( lim_{x rightarrow 0} frac{(cos(x)-1)(cos(x)-e^x)}{

1.	Find n for which ( lim_{x rightarrow 0} frac{(cos(x)-1)(cos(x)-e^x)}{x^n} ), has non zero value.
A.	>=1
B.	>=2
C.	<=2
D.	~2
Answer» C. <=2