You are an associate of a company that gets sales of $40,000 per year from product A and $80,000 from product B. The own price elasticity for product A is -2.2 and the cross price elasticity of demand between product B and A is 1.7. How much will the firm's total revenue (from both products) change if you increase the price of A (and only A) by 2%. Are A and B complements or substitutes? Explain.