6. (0.2 point) A pricing theorem for the bond market states that if a bond's yield does not change over its life, then the size of its discount or premium will at an increasing rate as its life gets shorter. (a) slightly increase. (b) increase. (c) slightly decrease. (d). decrease 7. (0.2 point) _ is the tendency for the bond prices to change asymmetrically relative to yield changes. (a) Immunization. (b) Concavity. (c) Convexity. (d) Rebalancing. 8. (0.2 point) is a measure of average maturity of the stream of payments associated with a bond. (a) Cash flow matching. (b) Pure yield pickup. (c) Contingent immunization. (d) Duration. 9.(0.2 point) Duration is a of the lengths of time until remaining payments are made. (a) weighted average. (b) moving average. (c) sensitivity measure. (d) arithmetic average