If I round $$1315$$ to the nearest ten, I get $$1320$$. Then, I multiply by $$3$$ to get $$3960$$. To the nearest hundred, this is $$4000$$. 
If I round $$1315$$ to the nearest ten, then multiply the result by $$3$$, then round to the nearest hundred, what is my final result? 
Options:
a) $$3800$$ 
b) $$3900$$ 
c) $$3945$$ 
d) $$3960$$ 
e) $$4000$$ 