A produce supplier ships boxes of produce to individual customers. The distribution of weights of shipped boxes is approximately normal with mean 36 pounds and standard deviation 4 pounds. Which expression represents the weight, in pounds, at the 75th percentile of the distribution? 
选项为:A:-1.96(4) + 36  B:-0.25(4) + 36  C:0.25(4) + 36  D:0.67(4) + 36  E:0.75(4) + 36  请回答其中一个选项.