After a strain of bacterial cells is exposed to a chemical mutagen, only 30% of the cells produce new colonies that continue to grow. Which of the following can be concluded?

A. Some cells underwent advantageous mutations.
B. Some cells underwent neutral mutations.
C. Some cells underwent lethal mutations. ****
D. Some cells underwent deleterious mutations.

My choice is C..?

3 answers

please...even a good guess??

Please??

Zat ish correct