Which of the following statements is true? Question 7 options: Population aging in Canada began to increase substantially 10 years prior to the "baby boom echo" period Population aging in Canada began to increase substantially 10 years after the "baby boom echo" period Population aging in Canada began to increase substantially 10 years after the "baby bust" period Population aging in Canada began to increase substantially at the end of the baby boom period Population aging in Canada began to increase substantially before the baby boom period