whats the answer

Which would be the correct sequence of events in the speedboat industry if waterway access was improved and, at the same time, a lighter polymer became available that increased production efficiency? Oa Supply would shift left, demand would shift left, equilibrium price would be indeterminable, and equilibrium quantity would decrease. @b Supply would shift right, demand would shift right, equilibrium price would be indeterminable, and equilibrium quantity would increase. Oc Supply would shift right, demand would shift left, equilibrium price would increase, and equilibrium quantity would be indeterminable. Od. Supply would shift left, demand would shift right, equilibrium price would decrease, and equilibrium quantity would increase