Table A

$\backslash$table$[[$Price$,$D$1,$D$2,$S$1,$S$2],[$$$12,5,8,19,14],[$$$10,8,12,17,12],[$$$8,11,15,15,10],[$$$6,13,18,13,8],[$$$4,16,21,11,6],[$$$2,18,24,8,4]]$

Refer to above table. Suppose that D$1$ and S$1$ are the prevailing demand and supply curves for a product. If the demand schedule changes from D$1$ to D$2,$ then:

A$.$ equilibrium price decreases from $$6$ to $$4.$

B$.$ equilibrium quantity decreases from $15$ to $13.$

C$.$ equilibrium quantity increases from $13$ to $18.$

D$.$ equilibrium price increases from $$6$ to $$8$