On the first day of the senior high school entrance examination, my mother designed a lunch recipe for Xiaoming: rice, braised crucian carp, shredded spicy chicken and Pleurotus eryngii with black pepper. Which of the following should you add? The main nutrients needed by human body are: sugar, fat, protein, water, inorganic salts and vitamins. The main ingredients of this recipe are sugar for rice, protein and fat for braised crucian carp and Pleurotus eryngii with black pepper, water for egg soup and inorganic salts. According to the requirements of a balanced diet, vitamins and other nutrients are also needed. Beans mainly provide vitamins and the like. Correct.

So choose: a