If the flowers Drew received today had been sent by someone who knows Drew well, that person would have known that Drew prefers violets to roses. Yet Drew received roses. On the other hand, if the flowers had been sent by someone who does not know Drew well, then that person would have sent a signed card with the flowers. Yet Drew received no card. Ttherefore, the florist must have made some sort of mistake: either Drew was supposed to receive violets, or a card, or these flowers were intended for someone else. Which one of the following statements, if true, most weakens the argument? ['Some people who know Drew well have sent Drew cards along with flowers.', 'Some people send flowers for a reason other than the desire to please.', 'Most people send roses when they send flowers.', 'Someone who does not know Drew well would be unlikely to send Drew flowers.']