Refer to the information provided in Figure 34.4 below to answer the question(s) that follow. 
Figure 34.4
-Refer to Figure 34.4. The demand and supply of pounds are S1 and D1. Which of the following can change the equilibrium exchange rate ($/pound) to $2.50 and the equilibrium quantity to 400 pounds?
Definitions:
Prior Distribution
Probability distribution for a variable before adjusting for empirical evidence on its likely value.
Black-Litterman Model
A mathematical model for portfolio allocation that incorporates expected returns based on equilibrium, with adjustments from the investor's views.
Treynor-Black Model
A portfolio optimization model that combines the market portfolio with a portfolio of select active bets to maximize portfolio performance under certain conditions.
Security Analysis
The examination and evaluation of various factors affecting the value of securities to make investment recommendations.
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