Sam Barr, and postdoctoral scholar, Greg Hill, are conducting experiments to see whether ozone can alter potassium channels in guard cells using an electrophysiological tool called patch clamping.

A. to see whether ozone can alter potassium channels in guard cells using
B. to see whether ozone can alter potassium channels in guard cells by the use of
C. to if ozone can alter potassium channels in guard cells with using
D. that see that ozone is able to alter potassium channels in guard cells using
E. that see whether ozone are able to alter potassium channels in guard cells using

OA is A . i think OA is also wrong . could someone please explain ?