Within Picoseconds of a Photon Being Absorbed by Rhodopsin

Multiple Choice

Within picoseconds of a photon being absorbed by rhodopsin,

A) retinal undergoes photoisomerization, shifting from 11-cis retinal to all-trans retinal.
B) opsin changes configuration to metarhodopsin II.
C) rhodopsin is regenerated and able to bind photons again.
D) the membrane potential of the photoreceptor is altered.
E) the outer segment of the photoreceptor separates from the inner segment.