Consider two chemical reactions (A) and (B) that take place during metallurgical process:

(A) $ZnC{O_{3(s)}}\buildrel \Delta \over \longrightarrow Zn{O_{(s)}} + C{O_{2(g)}}$

(B) $$2Zn{S_{(s)}} + 3{O_{2(g)}}\buildrel \Delta \over \longrightarrow 2Zn{O_{(s)}} + 2S{O_{2(g)}}$$

The correct option of names given to them respectively is :

1. A (A) is calcination and (B) is roasting Correct answer
2. B Both (A) and (B) are producing same product so both are roasting
3. C Both (A) and (B) are producing same product so both are calcination
4. D (A) is roasting and (B) is calcination