In which sentence is the uppercase word the SIMPLE SUBJECT?

Question

A. The storm lasted all NIGHT long.
B. Branched RATTLED against the roof.
C. The RAIN came down in sheets.
D. In the MORNING, the streets were flooded.

Answer 1

And you think ... ?

http://www.chompchomp.com/terms.htm
Click on Subject here if you're not sure.

Answer 2

The answer is C.The RAIN came down in sheets.

Answer 3

N/A is correct