A person collides into the wall in the shallow end of the pool. Afterwards, the person is holding their neck while standing in the water. What assistance should you provide if the person is able to walk?

a. Tell the person to avoid touching their head or neck
b. Provide verbal guidance to help the person exit the water
c. Approach the person from behind to help stabilize their head and neck
d. Offer thold the person's arm, or put an arm around their waist to keep them steady
e. Instruct the person to avoid nodding or shaking their head when answering questions