Mercury Fulminate Is a Shock-Sensitive Primary Explosive That Was Used

Mercury fulminate is a shock-sensitive primary explosive that was used in primers in firearms ammunition. It has an OB% of -11.2. Suppose it is combined with potassium perchlorate (OB +46.2) in a formulation. What mixture would yield a net zero oxygen balance? Report in %mercury fulminate/% potassium perchlorate

A) 73/27
B) 48/52
C) 81/19
D) 61/39
E) none of the above