Prices of gold, silver and copper fell considerably in 2011 and again in 2015. The fall in 2011 was said to be because miners increased production. The fall in 2015 was because demand, especially from China, decreased. Assuming that the equilibrium before 2011 was X, how would these movements in 2011 and subsequently in 2015 be shown on the demand and supply diagram? [Figure showing price and quantity axes with points X, T, S, R, Q and demand/supply curves] [Table mapping initial equilibrium, 2011 equilibrium, 2015 equilibrium to points A, B, C, D]