6. If there are two goods and if income doubles and the price of good 1 doubles while the price of good 2 stays constant, a consumer's demand for good a. 1 will increase only if it is a Giffen good for her. b. 2 will decrease only if it is a Giffen good for her. c. 2 will increase only if it is an inferior good for her. d. 2 will decrease only if it is an inferior good for her. e. None of the above