Which Statement About Bat Navigation Is True

Which statement about bat navigation is true?

A) Bats emit high-frequency sound pulses and detect the echoes reflected by the objects around them.
B) Bats emit ultra-low-frequency sound pulses and detect the echoes reflected by the objects around them.
C) In addition to detecting echoes from sound emissions, bats have keen night vision.
D) Bats navigate by detecting sounds from animals and those reflected by the objects around them.