Find the indicated probability by using the general addition rule.

The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency table below summarizes the results.

waiting Time Number of costumers

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0-3 14

4-7 11

8-11 15

12- 15 7

16-19 6

20-23 2

24-27 3

If we randomly select one of the times represented in the table, what is the probability that it is at least 12 minutes or between 8 and 15 minutes?

A. 0.733

B. 0.69

C. 0.121

D. 0.569