A recent survey of households in Violet Town revealed the following information.

Over the last year, the income of consumers who like to paint increased by 3%, while the income of people who like to draw increased by 2%. Simultaneously, the quantity of sketchbooks demanded by painters increased by 2.5%, ceteris paribus and the quantity of sketchbooks demanded by drawers increased by 2.5%, ceteris paribus.

Based on these observations, which one of the following statements is TRUE?

a)Sketchbooks are a necessity for painters and a luxury for drawers.

b)Sketchbooks are an inferior good to painters and a luxury for drawers.

c)Sketchbooks are a luxury for painters and an inferior good for drawers.

d) Sketchbooks are a necessity for both painters and drawers.