In the decomposition of silver carbonate to form metallic silver, carbon dioxide gas, and oxygen gas,

(a) One mol of oxygen gas is formed for every 2 mol of carbon dioxide gas; 

(b) 2 mol of silver metal is formed for every 1 mol of oxygen gas; 

(c) Equal numbers of moles of carbon dioxide and oxygen gases are produced; 

(d) The same number of moles of silver metal are formed as of the silver carbonate decomposed.