哪些条件满足时可能发生GGSM到LTE的异系统重选？
A.S_serving> THRESH_2G_low 且 S_non-serving_LTE> THRESH_LTEE_low
B.S_serving< THRESH_2G_low 且 S_non-serving_LTE< THRESH_LTEE_low 且 S_non-serving_LTE> S_serving +S_serving + H_PRIO
C.S_serving> THRESH_2G_low 且 S_non-serving_LTE> THRESH_LTEE_low且 S_non-serving_LTE< S_serving +S_serving + H_PRIO
D.S_serving< THRESH_2G_low 且 S_non-serving_LTE> THRESH_LTEE_low
正确答案是BD