In the paragraph below, which of the sentences is the author's CLAIM?
(1) Is your computer acting up? (2) Have your efforts to fix it been useless? (3) Are you unsure of who to call? (4) Well, we're here to help. (5) Kayser Computer Care is the best choice to fix your computer woes. (6) Our technicians are incredibly experienced, and our rates are astoundingly reasonable.