From gas consumption data and income data of various countries, we noticed a pattern where the
richest European countries consume the most gasoline, this makes sense since gasoline is a(n)
____ good, and if we expect income to increase substantially in the near future in China, their
demand for gasoline will _____.
a) inferior, decrease
b) inferior, increase
c) normal, decrease
d) normal, increase
e) none of the above