Which of the following statements is INCORRECT regarding the landlord's duty to maintain the leased premises?

A$.$ Modern real estate law imposes certain statutory and judicially implied duties on landlords to repair and maintain leased premises.

B$.$ In common law, the landlord made no warranties about the quality of leased property and had no duty to repair it$.$

C$.$ Under modern real estate law, the landlord owes a duty to maintain the leased premises as provided in the lease, by express law, and as implied by law.

D$.$ In common law, the tenant took the property $"$as is$."$

E$.$ In common law, the doctrine of caveat vendee applied to leases.