Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
The probability distribution for X = number of heads in 4 tosses of a fair coin is partially given in the table below.
-What is the value of the cumulative distribution function at 3, i.e. P(X ? 3) ?

A) 6/16
B) 10/16
C) 11/16
D) 15/16