Match the conversions in Column I with the type(s) of reaction(s) given in Column II.
`{:("Column I","ColumnII"),(A. "PbS"rarr"PbO",p. "Roasting"),(B. "CaCo"_(3)rarr"CaO",q. "Calcination"),(C. "ZnS"rarr"Zn",r. "Carbon reduction"),(D. "Cu"_(2)"S"rarr"Cu",s. "Self-reduction"):}`
A. a-q: b-r : c-p,r :d-p,s
B. a-p:b-q:c-p,r: d-p,s
C. a-p,s: b-q : c-p : d-s
D. a-p, s: b-p,q : c-p: d-s