Which of the Following Statements Is True

Which of the following statements is true?

A) Picking which type of media format to use depends only on the space available.
B) Picking which type of media to use depends on how much money you willing to spend.
C) Scientists were not able to grow bacteria in the lab until the creation of the Petri dish.
D) Media for bacterial growth only comes in a few varieties.
E) Agar is used as a solidifying agent for bacterial culture.