IT Staff for a Large Corporation Has Developed the Following $\begin{array}{cc}\text { Number of Calls } & \text { Probability } \\0 & .32 \\1 & .35 \\2 & .18 \\3 & .10 \\4 & .05\end{array}$

IT staff for a large corporation has developed the following probability
Distribution for the number of calls requiring troubleshooting problems per day. Based
On the distribution, the expected number of calls per day is $\begin{array}{cc}\text { Number of Calls } & \text { Probability } \\0 & .32 \\1 & .35 \\2 & .18 \\3 & .10 \\4 & .05\end{array}$

A) 2.77
B) 1.56
C) 1.21
D) 1.31
E) 1