To What Phenomenon Does the Double Standard of Aging Refer

To what phenomenon does the double standard of aging refer?

A) The perception that older men are more cognitively capable than older women
B) The simultaneous belief that older persons are losing cognitive function, while maintaining stable expectations of their productivity and behaviour
C) Expressing the belief that older persons are more important and valued, while actually demonstrating affection and respect less often
D) Women being judged more harshly than men in terms of their physical appearance as they age