【单选题】Studies indicate that the price elasticity of demand for cigarettes is about 0.4. A government policy aimed at reducing smoking changed the price of a pack of cigarettes from $2 to $6. According
A.30%.
B.40%.
C.80%.
D.250%.
- · 有5位网友选择 B,占比50%
- · 有3位网友选择 A,占比30%
- · 有1位网友选择 C,占比10%
- · 有1位网友选择 D,占比10%