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QUESTION 26 The cross-elasticity of demand of R with respect to the price of S is +1.5. The cross-elasticity of demand of T with respect to the price of U is -1.5. What can be concluded about goods R, S, T and U? A. R and S are inferior goods; T and U are normal goods. O B. R and S are normal goods; T and U are inferior goods. O c. R and S are substitutes; T and U are complements. O D. R and S are complements; T and U are substitutes