21. An object is in front of a convex lens, at a distance less than the focal length from the lens. Its image is
(A) virtual and larger than the object.
(B) real and smaller than the object.
(C) virtual and smaller than the object.
(D) real and larger than the object.
(A) virtual and larger than the object.
(B) real and smaller than the object.
(C) virtual and smaller than the object.
(D) real and larger than the object.