Increasing returns to scale, QUESTION THREE. a Merciful spend all her income on Biniani (B) and clother (C) Her preference can be represented by the utility function U(Bâ c) = 4/n (B) + 610 (c) Jo Compute the marginal rate of substitution Biani for dather (Binani is on the vertical axis). Is the Mes Increasing or decreasing in BÂČ? How do we interpret thisâ