A prize of $100, $200, $400, or $800 will be randomly awarded to game show contestant, with the probabilities of winning each prize shown in the
table below. What is the expected value of the prize that will be awarded?
Prize
$100 $200 $400 $800
Probability 0.4
0.2
0.2
0.2
A. $340
B. $320
C. $375
D. $380