Over 20 minutes observation interval, 40 subscribers initiate a call. Total duration of calls is 4800sec. Calculate load offered to network by the subscribers and average subscriber traffic?

Over 20 minutes observation interval, 40 subscribers initiate a call.

1.	Over 20 minutes observation interval, 40 subscribers initiate a call. Total duration of calls is 4800sec. Calculate load offered to network by the subscribers and average subscriber traffic?
A.	2e and 0.5e respectively
B.	3e and 1.5e respectively
C.	4e and 0.1e respectively
D.	1e and 0.2e respectively
Answer» D. 1e and 0.2e respectively