When two goods are perfect substitutes, the .(正确答案)
B:.(错误答案)
C:
选项:
A: indifference curve is a downward-sloping straight line
B: marginal rate of substitution is constant.
C:Both a and b are correct
D:indifference curve is a vertical straight line
发布时间:2024-05-20 22:54:57