f P$($A$)=0\mathrm{.}3,$ P$($B$)=0\mathrm{.}55,$ and P$($A $\backslash$cup B$)=0\mathrm{.}7,$ then P$($A $|$ B$)=$

Group of answer choices

$0\mathrm{.}27$

$0\mathrm{.}20$

$0\mathrm{.}00$

$0\mathrm{.}15$