An increase in price from $40 to $50 would cause the change in quantity demanded for Dā to be:
less than the change in quantity demanded for D2, so Dā is more inelastic than D2.
less than the change in quantity demanded for D2, so D2 is more inelastic than Dā.
greater than the change in quantity demanded for D2, so Dā is more elastic than D2.
greater than the change in quantity demanded for D2, so D2 is more elastic than Dā.