PLEASE PLEASE HELP need to get an A

Use the chart below. In a given week, what is the probability that more than 300 CD's sell?


Number of top 10 CDs Sold Each Week

0-100 101-200 201-300 301-400 401-500

0.1 0.15 0.4 0.25 0.1

A0.40
B0.25
C0.75
D0.35