The following are the duration in minutes of a sample of long-distance phone calls made within the Republic of South Africa reported by one long-distance carrier is as follows:

Time (in minutes)Relative Frequency

0 but less than 5 0.37

5 but less than 10 0.22

10 but less than 15 0.15

15 but less than 20 0.10

20 but less than 25 0.07

25 but less than 30 0.07

30 or more 0.02

Referring to the table above, if 100 calls were randomly sampled, how many calls lasted 15 minutes or longer?

• A.26
• B.14
• C.85
• D.74
• E.10