___ The director works very hard with all the actors. Exercise of the subject-verb arrangementThe set of the following couples is correct, and the other sentence has a subject-verbagrement error. Check the correct sentence.1. A _____ A catalog of courses and requirements often confuses students. B_____A catalog of courses and requirements often confuses students. Answer A is correct. Answer B is wrong. The subject is the catalogue, which is a singular noun, so the verb must be singular. The correct verb is confusing. Remember that the subject of the preposition (courses and requirements) is never the subject of the sentence.2. A_____ Here is the book and manual you need for this course. B_____ Here is the book and workbook you need for this course.