“We have just made a very difficult decision…we have decided to stop ________ QQ on computers ______

“We have just made a very difficult decision…we have decided to stop ________ QQ on computers ________ with 360's software, " Tencent said in an open letter on Wednesday night．

A.to run, installing

B.to run, installed

C.running, installing

D.running, installed

答案及解析： D