The Use of Bright Lights to "Reset" the Biological Clock

Multiple Choice

The use of bright lights to "reset" the biological clock:

A) has been successful in treating jet lag,but only when flying from east to west.
B) works well with shift workers but not with people who travel across time zones.
C) works well in the laboratory,but not so well in the real world.
D) works well with females,but not with males.