Under normal conditions $(70\%$ probability$),$ Financing Plan A will produce $$24,000$ higher return than Plan B$.$ Under tight money conditions $(30\%$ probability$),$ Plan A will produce $$40,000$ less than Plan B$.$ What is the expected value of return for Plan A over Plan B$?$

$$4,800$

$$28,800$

$$4,000$

$$35,200$