4 WARP Bob consumes two goods, beer and beer nuts. Last year, the price of beer was 2 while the price of beer nuts was 4, and he bought 2 units of beer and 10 units of beer nuts. This year, the price of beer is 4 and the price of beer nuts is 2, and he buys 6 units of beer and 8 units of beer nuts. Are Bob's behaviors consistent with the weak axiom of revealed preference? Explain