Which Statement Best Describes the Bruce Effect

Multiple Choice

Which statement best describes the Bruce effect?

A) Group-housed female mice show slower estrous cycles.
B) Spontaneous abortion in female mice is noted after exposure to the odor of a novel male.
C) Group-housed female mice show a faster estrous cycle.
D) Estrous cycles of group-housed female mice are synchronized after exposure to the odor of an intact male mouse.
E) The odor of a male mouse accelerates the onset of puberty in a female mouse.