Which of the following statements about the beak of soapberry bugs is false?

Which of the following statements about the beak of soapberry bugs is false? a. Its length is a heritable trait. b. Its length has evolved in response to changes in fruits that the insect feeds on. c. Measurable evolutionary changes have occurred to its length within decades. d. Its length can evolve in both directions (larger and smaller). e. All of the above are true.