U_H andU_W denote husband's and wife's respective utilities.H and W have resourcesI_H andI_W, respectively. They can redistribute these resources between each other. Their threat points areT_H andT_W.

I_H=4000,I_W=2000,T_H=120 andT_W=90

Given the above information, the Nashproduct can be expressed as:

(a) (5880 - U_W)(U_W - 90) only

(b) (U_H - 120)(5910 - U_H) only

(c) None of the stated options are correct.

(d) both (a) and (b) are correct.