The equation given below shows an unbalanced chemical reaction between copper and silver nitrate.

Cu + p AgNO3 --- q (Ag) + Cu (NO3)2

What should be the value of p and q in the equation if matter is conserved during the reaction?
A.
p=2 q=2
B.
p=2 q=3
C.
p=3 q=2
D.
p=3 q=3