\textbf{143--} Ali, Ahmad, Rozbeh, Davood, and Hamed are ranked by height. We know that at least two of them are shorter than Ali. Davood is shorter than Rozbeh -- Ahmad is the shortest boy -- Davood is shorter than Ali. Which conclusion is \textbf{incorrect}?
(1) Rozbeh is shorter than Ali \quad (2) Davood is shorter than Ahmad \quad (3) Ahmad is shorter than Hamed \quad (4) Ahmad is taller than Ali