When LTE2559: ARP based partial admision control for handover is

When LTE2559: ARP based partial admision control for handover is activated, which factors determine if a bearer establishment or modification request is accepted? 1. priority levels 2. pre-emption capability 3. Pre-emption vulnerability

A.1ony

B.1,2and3

C.1and 2 only

D.1and 3 only

正确答案是B