4B. If a consumer chooses ~ = (10.20. 12) at prices p = (2.1.5), y =
(10. 5. 15) at prices p' = (4.2. 3) and = = (5.2. 10) at prices p' = (5. 10.5)
then,
a she violates the weak axiom of revealed preference (WARP)
she does not violate WARP and shows direct revealed preference of a to both y and s, and of y to =
she does not violate WARP and reveals to prefer y to x
she does not violate WARP and reveals to prefer y to s, and = to y
none of the previous four statements is correct.