Which sentence has a correctly placed modifier?

Responses
A Painless, Dr. Callis recommended a new test for cancer.Painless, Dr. Callis recommended a new test for cancer.
B Dr. Callis recommended a new test for cancer, which is painless.Dr. Callis recommended a new test for cancer, which is painless.
C Dr. Callis recommended a new test, which is painless, for cancer.Dr. Callis recommended a new test, which is painless, for cancer.
D Dr. Callis recommended, which is painless, a new test for cancer.

4 answers

C Dr. Callis recommended a new test, which is painless, for cancer.

and r u SURE thats right?

cuz if not im coming for u

its right..