The phrase "the spoils system" refers to?

The phrase "the spoils system" refers to?

a. Corrupt politicans who spoiled the public image of national office holders.

b. The government agency set up to regulate garbage collection and disposal.

c. Martin Van Buren's efforts to ruin the relationship between Jackson and John C. Calhound

d. The bargain made between Clay and Adams in the election of 1824

e. Andrew Jackson's use of presidential appointive powers to reward his supporters with government jobs.