Consider the following statements about the mechanism whose steps are 

$$A + B \rightarrow C + D$$, 

$$2C \rightarrow F$$ and 

$$F + B \rightarrow 2A + G$$. Statement 

(i) is that the overall reaction is $$3B \rightarrow 2D + G$$. Statement 

(ii) is that A is a catalyst and B is a reactant. Statement 

(iii) is that C and F are intermediates. Statement 

(iv) is that D and G are products. The correct set of statements is