AMC 12 2004b Problem 2

In the expression $c\cdot a^b-d$, the values of $a$, $b$, $c$, and $d$ are 0, 1, 2, and 3, although not necessarily in that order. What is the maximum possible value of the result?

$(\mathrm {A}) 5 (\mathrm {B}) 6 (\mathrm {C}) 8 (\mathrm {D}) 9 (\mathrm {E}) 10$