What Was the Purpose of Repeatedly Drying,freezing,and Thawing Some of the Fungi

Multiple Choice

What was the purpose of repeatedly drying,freezing,and thawing some of the fungi?

A) to kill the fungi
B) to make the fungus more susceptible to the virus
C) to remove the virus
D) to prepare the fungi to infect the panic grass
E) to prepare the fungi for growth at 65°C