单项选择题
A.短信催收;上门催收 B.短信催收;电话催收 C.信函催收;上门催收 D.电话催收;信函催收
A.短信催收;上门催收 B.短信催收;电话催收 C.信函催收;上门催收 D.信函催收;电话催收
A.短信催收 B.电话催收 C.信函催收 D.上门催收