I so agree regarding the Barron's book, almost every test has wrong answers
That's for sure---including their review notes. For example, they have the requirement for protic and aprotic solvents in Sn1 and Sn2 mixed up in the review section, among others! Warnings have been sent out exhaustingly about the mistakes in Barron's. Please---DO NOT STUDY BARRON'S, FOR YOU WILL BE MISSLED AND SENT DOWN THE INCORRECT PATH!