Roeder (1967) Determined That the Noctuid Moth Has Two Auditory

Roeder (1967) determined that the noctuid moth has two auditory receptors, A1 and A2, for each of its two ears. Which of the following statements about the receptors is TRUE?

A) The A1 receptors are approximately 10 times more sensitive than the A2 receptors and begin to respond when a predatory bat is still some distance away.
B) The A1 receptors are on the left side and the A2 receptors are on the right side of the moth's body, making determination of a predatory bat's direction possible.
C) The A1 receptors are responsible for coding differences in a predatory bat's distance from the moth; the A2 receptors are responsible for coding differences in direction.
D) The A1 receptors serve as a general early warning system; the A2 receptors are primarily responsible for directing fine control of directional movement for effective evasive maneuvers.