Did I select the right answer because I am really confused

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Which expression shows the sum of the polynomials with like terms grouped together

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6