After a particular surgery patients can have up to 3 major adverse events. The following table gives the probability distribution for the number of adverse events. X(# of adverse events) 0 1 2 3 P(x) 0.8 0.13 0.05 0.02 What is the standard deviation of the number of adverse events? (The mean number of adverse events is 0.29) A. 0.29 B. 0.65 C. 0.49 D. 1.02