单项选择题

A subscriber makes a two-minute call and a four-minute call during the busy hour. How much traffic does he generate for that hour? （）

A.33 millierlangs
B.66 millierlangs
C.100 millierlangs
D.10 millierlangs
E.25millierlangs

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B. Increases capacity and cost, but decreases interference.
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网络维护生产岗位(优化专业)

A subscriber makes a two-minute call and a four-minute call during the busy hour. How much traffic does he generate for that hour? （）