Last week, there were several types of animals at a local animal shelter: Let U be the set of the types of animals at the shelter last week. During the week, some of the animals were treated by the veterinarians on staff. Let F be the set of animal types that were treated by Dr. Fee. Let P be the set of animal types that were treated by Dr. Pham. Let R be the set of animal types that were treated by Dr. Ruiz. Use the Venn diagram to get your answers below. cats gerbils Consider this set (which is written in descriptive form): {El} ELEI Q) The set of animal types that were not treated by Dr. Pham. but were treated by Dr. Fee or Dr. RUIZ birds cam dogs (a) Which of these is a correct way to write the set? 0 P1 U (F n R) O P1 U (F U R) 0 PI n (FU R) O P1 n (F n R) ferrets gerbils snakes (b) Write the set in roster form. D mice pigs rabbits lu tiles