If the variable cost is $$15$ per unit, the price is $$30,$ the probability of default is $10$ k $,$ and the discount rate on receivables is $2$ K $,$ then the RpV of granbig credt tio a one$-$time customer is

$$14\mathrm{.}71$

$$41\mathrm{.}18$

$$11\mathrm{.}47$

$$12\mathrm{.}00$