【单选题】

Food was short: his vegetable garden became less a hobby than a necessity.

A、Due to lack of food, it was necessary for him to plant vegetables.
B．He used to plant vegetables as a hobby. Now because of lack of food, it became his necessary labor.
C．Planting vegetables was not his hobby, but he had to work in his garden.
D．Without enough food, he had to plant vegetables in his garden.