In general, in the most generic form, a number with a radix point is represented by a series of coefficients as follows:

a$5$a$4$a$3$a$2$a$1$a$0.$a$-1$a$-2$a$-3$

Given the number below, what is the place value of a$-2($what is the power of $2$ for a$-2)?$

$111001\mathrm{.}0011$

a$.$

$0\mathrm{.}125$

b$.$

$0\mathrm{.}5$

c$.$

$0\mathrm{.}25$

d$.$

$0\mathrm{.}0626$