Charlene Just Celebrated Her 57^th Birthday

Charlene just celebrated her 57^th birthday. She says that she feels like she is in her mid 30s. If she is like most middle-aged people, what might we conclude about Charlene's physical well-being?

A) She probably is as healthy as she was in her mid 30s since bodily function is stable in middle age.
B) She is probably experiencing imperceptible sensory and physical changes.
C) She is most likely in better health now than she was in her mid 30s due to advances in medical technology.
D) None of these is true.