"Turn That Frown Upside Down," Jarvis' Mother Told Him When

"Turn that frown upside down," Jarvis' mother told him when he looked sad. "If you smile you'll start to cheer up." Is she right?

A) Not likely. Downward social referencing suggests that if Jarvis begins to smile he will start thinking about the thing she should not be happy about.
B) Definitely, although it only works with very young children and not adults.
C) Probably. The facial feedback hypothesis says that emotions can change based on different facial expressions.
D) No. The self-perception theory says that our internal state is unrelated to our outward expressions.