Suppose that an index of Canadian stocks currently stands at 400. The Canadian dollar is currently worth 0.70 U.S. dollars. The risk-free interest rates in Canada and the U.S. are constant at 6% and 4%, respectively. The dividend yield on the index is 3%. Define Q as the number of Canadian dollars per U.S dollar and S as the value of the index. The volatility of 5 is 20%, the volatility of Q is 6%, and the correlation between S and Q is