please answer all questions with just letter answer :)) thank you

QUESTION 1 Modern Clothing, Inc. and National Denim Corporation use the mark "Made by Members of the U.S. Textile Workers Union on the tags of their products to indicate the participation of the union in the manufacture. Modern and National are not in business together and do not own this mark. The mark is a. a certification mark b. a collective mark Ctrade dress d. a service mark QUESTION 2 Barry develops a new soda making machine, which he names "Flash Shot." He also writes the operating manual . Barry can obtain trademark protection for a the operating manual for the machine Ob the "newness" of the machine Oc the machine d. the name of the machine. QUESTION 3 In 2020, Bernadine writes The First Yard, a novel about a famous runner. Bernadine does not register the work with the US Copyright office Under federal copyright law, Bernadine's work is a. not protected because it was not registered b. for twenty years if she registers within six months of the first sale, Oc. forever Od for Bernadine's life plus seventy years. QUESTION 4 Gates publishes a book titled Flagstaff: Days of Old, which includes a chapter from Yordy's copyrighted book The Flagstaff Story. Gates's use of the Chapter would violate Yordy's copyright if Oa.consumers are confused. Ob Gates does not have Yordy's permission OC Gates uses Yordy's chapter entirely and exactly d. Gates's use is intentional. QUESTION 5 Sam employs Diane to buy property for a possible commercial development. Diane secretly buys some of the property and sells it to Sam at a profit Diane has breached a. the duty of loyalty. b.no duty c the duty of notification d. the duty of accounting