_ A case-control stud].r was conducted to determine if using antihistamines around the time of conception increased the risk of birth defects in the o'spring. No personal mten'iews were conducted regarding the subjects: antihistamine use. Instead= women were considered exposed if computerized pharmacy records om their health maintenance organization indicated that the}r had lled at least one prescription for antihistamines with EDD days before the birth of the child. a- Which type of information bias is this data collection method most susceptible to and why? h. Which type of information bias is this data collection method least susceptible to and why