单项选择题

When is the heavy traffic hour on most city streets according to the passage

[A] During 9:00 a.m. and 5: 00 p.m. from Monday to Friday. [B] Between 8:00 a.m. and 6:00 p.m. from Monday to Friday. [C] In the period of 9:00 a.m. and 5: 00 p.m. every day.