That is a multiple choice test :

 - [ ] ! The answer D
 - [ ] = That doesn't work *at the moment*
 - [ ] ! It's still work !
 - [ ] ~ It will work

And this is an other QCM :

 - [ ] ! The answer D
 - [x] = That doesn't work *at the moment*
 - [ ] ! It's still work !
 - [x] ~ It will work