How many permutations are there of 38 objects when taken 9 objects at a time, if a particular one of these objects must always be included? O a. 9(38 - 1)!/(38-9)! O b. (38 - 1)!/(38-9-2)! O c. 9(38)!/(38-9)! O d. 38(38 - 1)!/(38-9-2)! e. 9(38-1)!/(38-9-1)