如果x₁，x₂是两个不相等的实数，且满足x₁²-2x₁=1，x₂²-2x₂=1，那么x₁•x₂等于（　　）

A．2

B．-2

C．1

D．-1

Which of the following statements about fixed income securities is FALSE（）

A. The corporate bond sector is more important in the US than in Japan and Germany.

B. Coupon interest and capital gains from municipal bonds are tax exempt at the federal level.

C. Treasuries and agencies are quoted in 32^nds of a price point.