A Capuchin monkey's preference over cF units of fruit discs and cC units of cereal chunks can be represented by the utility function u (cF , cC ) = cF + cC + (cF rF ) + (cC rC ) where rF is his reference point for fruit discs, and rC is his reference point for cereal chunks. The function () is defined as (z) = ( z z 0 3z z < 0 .Suppose that the monkey has cF fruit discs and cC cereal chunks. What is the minimum number of fruit discs the monkey would require in order to trade away one of his cereal chunks?