. Rice is a rich source of carbohydrates, it means
(a) it contains only carbohydrates
(b) it contains carbohydrates and minerals in same amount
(c) it contains less amount of carbohydrates and more amount of minerals
(d) it contains more amount of carbohydrates than other nutrients
(d) it contains more amount of carbohydrates than other nutrients.
Different amount of nutrients are present in different food items. The food is said to be a good source of particular nutrient if the amount of that nutrient is more than amount of other nutrients in it.