Consider the example of cleaning your dorm except now there are BOTH rewards and costs. Suppose you have β preferences with β = 0.7 and δ = 1. You have to clean your room.
a) β = 0.5, δ = 0.8
b) β = 0.7, δ = 1
c) β = 1.2, δ = 0.9
d) β = 0.9, δ = 0.5