Interpret the Mean of a Discrete Random Variable as an Expected

Multiple Choice

Interpret the Mean of a Discrete Random Variable as an Expected Value
-A local bakery has determined a probability distribution for the number of cheesecakes that they sell in a given day. The distribution is as follows:
$\begin{array}{l|ccccc}\text { Number sold in a day } & 0 & 5 & 10 & 15 & 20 \\\hline \text { Prob (Number sold) } & 0.1 & 0.15 & 0.19 & 0.16 & 0.4\end{array}$

Find the number of cheesecakes that this local bakery expects to sell in a day.

A) $13.05$
B) $13.15$
C) $13.55$
D) 10