Answer:
A. relatively more inelastic because water is a necessity
Explanation:
Inelastic goods refers to the type of goods which demand wouldn't move that much regardless of the price change.
This tends to be the case for every products that are considered as necessity.
If let's say the price of water is $1 per bottle. We all know that every human being need to drink at least 1.5 L of it to stay alive. If all producers of water decided to raise the price into $2 ,the customers would most likely still purchase it. They have no choice.