Suppose the consumption set is X = {(x1, x2)| x11, x21}. Tom's preferences can be represented by the utility function U(x;y)=(x^)*(y^) where >0 and >0. Jerry's preferences are represented by V(x, y)=a*log(x)+b*log(y). (Multiple options may be correct.)

AIf a = 2 and b = 2 , then Tom and Jerry's preferences are identical.

BIf a < 0, Tom's preferences must be different to Jerry's.

CThese are different functions and must therefore represent different preferences.

DThere is not enough information to conclude any of the above.