Which of these is most likely to be attacked by the FTC as a deceptive business practice?

Which of these is most likely to be attacked by the FTC as a deceptive business practice?
 a. selling stock to investors in a company for three times its true value
  b. charging 25 interest on consumer loans when the market rate of interest is 10
  c. mailing office supplies to corporations that did not order them, but then pay the bill because they thought they did order them
  d. telling consumers that a brand of jeans is special and selling them for double what other jeans sell for, when they are the same as other jeans except for the name
  e. all of the other choices