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Answer the question based on the information given below:
Let x and y be real numbers and let

$f(x, y) = |x+y|, F(f(x, y)) = -f(x,y) \text{ and } G(f(x, y)) = -F(f(x, y))$

What is the value of $f(G(f(1,0)), f(F(f(1,2)), G(f(1,2))))$?

1. 3
2. 2
3. 1
4. 0

f(1,f(-3,3)) =f(1,0)=1

Ans C)
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