【单选题】In 1989, Bruce spent his income on two goods x and y. Between 1989 and 1990, the price of good x rose by 8 per cent and the price of good y rose by 8 per cent. In 1990, Bruce bought the same amount of...
A.
y is a normal good.
B.
y is an inferior good.
C.
x is an inferior good.
D.
nothing can be said about inferiority or superiority, since we don't know what happened to income