In order to prevent applications such as Email and ERP from being affected during normal working hours, an enterprise hopes that the minimum bandwidth available for such traffic is not less than 60Mbps. Which of the following configuration meets the requirements?

In order to prevent applications such as Email and ERP from being affected during normal working hours, an enterprise hopes that the minimum bandwidth available for such traffic is not less than 60Mbps. Which of the following configuration meets the requirements?
A . time-range work_time
period-range 09: 00: 00 to 18: 00: 00 working-day
traffic-policy
profile profile_email
bandwidth guaranteed-bandwidth whole both 60000
rule name policy_email
source-zone trust
destination-zone untrust
application app BT
application app YouKu
time-range work_time
action qos profile profile_email
B . time-range work_time
period-range 00: 00: 00 to 09: 00: 00 working-day
traffic-policy
profile profile_email
bandwidth guaranteed-bandwidth whole both 60000
rule name policy_email
source-zone trust
destination-zone untrust
application app LotusNotes
application app OWA
time-range work_time
action qos profile profile_email
C . time-range work_time
period-range 09: 00: 00 to 18: 00: 00 working-day
traffic-policy
profile profile_email
bandwidth guaranteed-bandwidth whole both 60000
rule name policy_email
source-zone trust
destination-zone untrust
application app LotusNotes
application app OWA
time-range work_time
action qos profile profile_email
D . time-range work_time
period-range 09: 00: 00 to 18: 00: 00 working-day
traffic-policy
profile profile_email
bandwidth maximum-bandwidth whole both 60000
rule name policy_email
source-zone trust
destination-zone untrust
application app LotusNotes
application app OWA
time-range work_time
action qos profile profile_email