suppose that, at the market-clearing price of natural gas, the price elasticity of demand is -0.9 and the price elasticity of supply is 0.4. what will result from a price increase of 10 percent above the market clearing price?

A. a surplus equal to 1.3 percent of the market clearing price

B. a surplus equal to 13 percent of the market clearing price

C. a surplus equal to 5 percent of the market clearing price

D. a surplus equal to 0.5 percent of the market clearing price