Choose the correct statement considering the underlined adjectives in the text and their correct degrees according to the context:
    Drill Sergeant Mendonça barked orders to the Signal Corps students like a mad dog. Today's training was (demanding) than yesterday's, pushing the will-be NCO’s to their limits. The Signal Corps students are sure they are the (smart) bunch in academic disciplines, but they also needed to excel in their physical training. Mendonça, (mean) as a rattlesnake, kept reminding them of the consequences of failing the fitness test.
    The obstacle course was the (bad) of all the exercises. They climbed walls, slogged through mud, and crawled under barbed wire, sweating like pigs. By lunchtime, they were exhausted and (hungry) than wolves. Sergeant Mendonça, however, would not let us rest. "This is not a picnic, gentlemen!" he yelled. The NCO academy is not for the faint of heart in fact, but the students are determined to make it.