In exponential function fitting, what are the equations to determine the coefficients $m$ and $b$ from coefficient vector $p$ which is obtained from polyfit?

A$.m=p(1),b=p(2)$

B$.m=p(1),b=10**p(2)$

C$.m=p(1),b=10p(2)$

D$.m=p(1),b=\frac{10}{p}(2)$