Immunization of coupon-paying bonds does not imply that the portfolio manager is inactive because: i. the portfolio must be rebalanced every time interest rates change. ii. the portfolio must be rebalanced over time even if interest rates don't change. iii. convexity implies duration-based immunization strategies don't work.

Annette suffers from recurrent episodes of gorging on large quantities of food followed bypurging through self-induced vomiting in order to prevent gaining weight. although her weight is well below normal to the point that others see her as "skin and bones," she worries excessively about being fat. she also has impulse control problems in other areas of her life.she is suffering from ) binge-eating/purging anorexia2) restrictive anorexia3) bulimia nervosa 4) binge-eating disorder