66. Which of the following argument is suggested in the research? (A) Teenagers owning cats or dogs are less likely to develop allergies to those animals later in life. (B) A child who has been living with pets anytime after one year old has a significant lower risk of having allergies. (C) There is a certain period of time in which exposure to pets may have a protective effect against allergies. (D) Sending away pets is an effective way to prevent children’s allergies.