单项选择题

汽车电池低温起动测试是判定电池性能的另一关键指标,常规的低温起动测试温度和判定指标为()

A.-18℃,U10s≥7.2V
B.-18℃,U30s≥7.2V
C.-29℃,U10s≥7.2V
D.-29℃,U30s≥7.2V