Roman loves corn bread. he buys corn meal and wheat flour in order to make corn bread. his recipe calls for two cups of corn meal and one cup of flour for each batch that he bakes. more corn bread is better for roman. he can bake fractions of a batch, but has no use for corn meal or flour that is left over. which of the following is roman’s utility function on cups of corn meal, denoted by c, and cups of flour, denoted by f?

a. u(c, f)=min{c,2f}
b. u(c, f)=min{2c, f}
c. u(c, f)=min{2c,3f}
d. u(c, f)=min{3c, sf}
e. u(c, f)=2c+3f