When a new olfactory receptor forms to replace one that died, does it connect to the same site in the olfactory bulb as the previous receptor? If so, how?

a. No, it connects at random with a site in the olfactory bulb.

b. It connects to the correct site because only one neuron in the olfactory bulb has a vacancy.

c. It finds the correct site by chemical attraction.

d. Each axon connects to the nearest neuron in the olfactory bulb.