Assume that widgets and trinkets are both priced at $2 per unit and that Carlita has $70 to spend on widgets and trinkets. Carlita buys 18 units of widgets and 12 units of trinkets. The marginal utility of widgets is 30 and the marginal utility of trinkets is 30. This indicates that Multiple Choice Carlita should make no change in consumption. Carlita should definitely buy more trinkets. Carlita should definitely buy more widgets. Carlita should buy more trinkets and widgets, but there is not enough information to determine how much of each Carlita should purchase.