Well, it isn't A because there should only be a period at the end of P.M. It isn't C because it has to be a period between M and D.
So, the answer has to be B.
Hope this helps!
Answer:
a word, letter, or number placed before another.
"the Institute was granted the prefix ‘Royal’ in 1961
Explanation:
its C! The Great Wave represents instability and uncertainty.