You work as a network technician at. Your boss， Mrs. ， is interested in the Spanning Tree Protocol timers.  What can you tell her regarding the default STP timers？ （）

A、The hello time is 5 seconds.

B、The forward delay is 10 seconds.

C、The hello time is 2 seconds.

D、The forward delay is 15 seconds

E、The max_age timer is 15 seconds.

F、The hello time is 10 seconds.

G、The max_age timer is 20 seconds.

H、The forward delay is 20 seconds.

I、The max_age timer is 30 seconds.