Select the correct option for the mechanism of vision.

• A
  Light falls on retina $\rightarrow$ Dissociation of retinal from opsin $\rightarrow$ Change in membrane permeability $\rightarrow$ Depolarization of photoreceptor cells $\rightarrow$ Optic nerve $\rightarrow$ Visual cortex
• B
  Light falls on retina $\rightarrow$ Dissociation of retinal from opsin $\rightarrow$ Change in membrane permeability $\rightarrow$ Optic nerve $\rightarrow$ Depolarization of photoreceptor cells $\rightarrow$ Visual cortex
• C
  Light falls on retina $\rightarrow$ Dissociation of retinal from opsin $\rightarrow$ Change in membrane permeability $\rightarrow$ Depolarization of photoreceptor cells $\rightarrow$ Pons
• D
  Light falls on retina $\rightarrow$ Dissociation of retinal from opsin $\rightarrow$ Change in membrane permeability $\rightarrow$ Optic nerve $\rightarrow$ Depolarization of photoreceptor cells $\rightarrow$ Pons