The process in which water is removed from some substances is called 'dehydration'. Almost 90% of the water can be taken out of some foods by dehydration. People going on treks and mountain climbing trips, where food is not available, often carry such packed dehydrated food in their bags instead of fresh fruits and vegetables. What could be one of the advantages of carrying dehydrated food on treks and mountain climbing trips?

a. The luggage will be lighter to carry.

b. The use of plastic bags can be avoided.

c. The food will have better nutrients than before.

d. The amount of oxygen in the food will be increased.