【单选题】
某病人因长期卧床,骶尾部皮肤红肿、破溃,护士给予红外线灯照射创面,灯距和照射时间为()
A、30-50cm,20-30min
B、30-50cm,30-60min
C、50-60cm,20-30min
D、50-60cm,30-60min
A、30-50cm,20-30min
B、30-50cm,30-60min
C、50-60cm,20-30min
D、50-60cm,30-60min