Lithium is mined in South America. Demand for lithium comes, in part, from its use in batteries for electric cars. A recent report stated that the price of lithium fell 24% from 2018 to 2019, during which time the quantity purchased increased from 400 million tons to 420 million tons. This information leads you to conclude that A. the demand of lithium is inelastic B. the demand of lithium is elastic C. the supply of lithium is elastic D. the cross-price demand elasticity with other metals is negative E. none of the other choices is correct