Answer:
She should put it in an air tight container and place it in the fridge.
A. The cost depends fully on the artist
B. It does not matter if they are new but if they are sterile
C. That is irrelevant
D. Do not get ink from someone who is not licensed or certified<span />
3, 5, 7, 1, 2
Since you have to use five of them, numbers 4 and 6 would not go into the plan. The order above is the one that makes most sense to me.