We can’t decide until we hear all the advantages and  disadvantages of the matter.

A  It is not until all the advantages and disadvantages of  the matter are heard can we decide.

B Before we can come to a decision, we’ll need to hear all the pros and cons of the matter.

C We’ll know the advantages and disadvantages of the matter after we’ve made a decision.

D Unless we hear all the advantages and disadvantages, we can make a decision.