Which shows a correctly paired dna molecule ?
a. tct cg
atg gc

b. tct cg
aga gc

c. tct ga
aga gc

d. tct cg
aga cg

B. All Cs are paired with Gs, all Ts are paired with As

What is the question? if you were looking to design a method of separating something, you can separate this compound by putting both in water and allowing the water to dissolve the sugar. then pour it into another beaker and evaporate it then boom! salt and sugar : ) 

Iam not sure but to me it with be a or dsorry if i was late! hope this ! : )if you really want me to find out the answer that is correct tell me and i will do more research but the a or d makes sense to me.