一个2G－LTE多模UE将在下述条件下发生异系统重选（ ）
A.S＿SERVING＜ THRESH＿2G＿LOW 且 S＿NON－SERVING＿LTE ＞ THRESH＿LTE＿LOW
B.S＿SERVING＜ THRESH＿2G＿LOW 且 S＿NON－SERVING＿LTE ＜ THRESH＿LTE＿LOW 且 S＿NON－SERVING＿LTE ＞ S＿SERVING ＋ H＿PRIO
C.S＿SERVING＞ THRESH＿2G＿LOW 且 S＿NON－SERVING＿LTE ＞ THRESH＿LTE＿LOW
D.S＿SERVING＞ THRESH＿2G＿LOW 且 S＿NON－SERVING＿LTE ＜ THRESH＿LTE＿LOW 且 S＿NON－SERVING＿LTE ＞ S＿SERVING ＋ H＿PRIO
正确答案是AB