Vision Is Perceived by Which of the Following Sequential Events

Vision is perceived by which of the following sequential events?
I-The bound photopigment cis-retinal of the photoreceptor rods and cones dissociates in response to light,thus it indirectly activates the bipolar neurons and then ganglion cells.
II-The action potentials are propagated through the axons of ganglion cells,the stimuli thus are projected to the occipital region of the brain.
III-A negative charge in the opening of the canal depolarizes the receptor at the base,which causes release of neurotransmitter and increase activity of the sensory neurons.

A) I then III
B) III then II
C) III then I then II
D) I then II then III
E) I then II

Correct Answer:

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