Below are given three sentences with one common word in each.  Choose the sentence that incorrectly uses the word.      
i.        His temper flared when he received the unexpected news, causing him to raise his voice in anger.    
ii.        The technician warned against attempting to temper with the sensitive equipment, as any interference could lead to costly damage or malfunction.   
iii.        The blacksmith used precise control over the temper of the metal to craft a durable and reliable blade.