What is the $n$ th$-$degree polynomial approximation for the function $f(x)=e^{1-2x}$ about the point $x=1?$

select one:

a

$f(x){\displaystyle \underset{i=0}{\overset{n}{}}}\frac{2^k}{kl{e}^x}$

b$.f(x)={\displaystyle \underset{k=0}{\overset{n}{}}}\frac{(-1{)}^{k-2}e}{k!}{x}^k$

$f(x){\displaystyle \underset{i=1}{\overset{n}{}}}\frac{(-1{)}^k{2}^k}{k{e}^k}(2-1{)}^k$

$|)x^k$