Can someone help me in finding out the right answer from the given options. The law of diminishing marginal utility might be evidenced by the person: (i) Smoking more however enjoying each and every extra cigarette less. (ii) Buying a latest car after getting an increase. (iii) Distributing excess food to starving children. (iv) Who studies tougher in college than she did in high school. (v) Who works less attentively as he gets older.