A resistance level differs from a support level in that A. at a resistance level most investors would hold stock until the price improves; at a support level a stock becomes overvalued and investor interest is likely to decrease. B. at a resistance level the analyst would expect a substantial increase in the demand for a stock; at a support level the analyst would expect a substantial decrease in the demand for a stock. C. at a resistance level most investors would sell a stock; at a support level most investors would be willing to purchase a stock. D. Choices A and B.