Which of these pairs of events are dependent? a. you flip a coin and get tails. you flip it a second time and get heads. b. you pull your friend's name out of a hat that holds 20 different names, replacename, then draw out your friend's name again. c. you spin a spinner divided into five equal parts and is numbered 1-5. you get a 3 on the first spin, and then spin again and get a 2 on the second spin. d. you remove a black sock from a drawer without looking, then remove another blacksock.