For numbers 6-8, which of the following situations illustrates combination?
A. Picking a team of 3 from a group of 10 B. Picking a president, vice president and secretary from a group of 10
C. A team of 8 basketball players needs to choose a captain and co-captain. D. There are 45 applicants for three Computer Programmer positions.
E. A team of 17 softball players needs to choose three players to refill the water cooler. ​