32. Aspirin can be taken by drinking a
cup of water in which in aspirin tablet
has been dissolved. It can take several
minutes for an aspirin tablet to dissolve
though. The following variables can be
tested to see whether they can influence
the rate of this process:
I temperature II. surface area
III. pressure
IV. concentration
A. I, II and IV only
B. I and II only
C. II and III only
D. all of the variables​