Based on the following payoff table.

$\backslash$table$[[$Alternative$,$High,Medium,Low$],[$A$,20,20,5],[$B$,25,30,11],[$C$,30,12,13],[$D$,10,12,12],[$E$,50,40,-28],[$Prior Probability,$0\mathrm{.}3,0\mathrm{.}2,0\mathrm{.}5]]$

The Expected Opportunity Loss is:

a$.10\mathrm{.}5$

b$.23$

c$.19$

d$.-28$

e$.0$