Last month John made $3,200 and watched two movies in a movie theater. This month he made $5,600 and watched one more movie than last month. John's income elasticity of demand for movies at the movie theater is equal to ________ . Therefore, for John, movies at the theater are a(n) ________ good.

Group of answer choices

a) +0.73; normal

b) -0.21; inferior

c) -1.36; normal

d) +0.21; complementary