## Core Concept
The Rural Child Health (RCH) programme provides pediatric iron-folic acid tablets to prevent and treat iron deficiency anemia and folate deficiency in children. These tablets contain specific amounts of elemental iron and folic acid tailored to pediatric needs.

## Why the Correct Answer is Right
The correct answer, **20 mg elemental iron and 100 mcg folic acid**, reflects the standard composition of pediatric iron-folic acid tablets distributed under the RCH programme. This formulation is designed to meet the nutritional needs of children, supporting healthy growth and development while preventing deficiencies.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it specifies a different dosage that does not match the standard RCH programme tablets.
- **Option B:** Similarly, this option does not align with the RCH programme's pediatric iron-folic acid tablet composition.
- **Option D:** This option also presents an incorrect combination of elemental iron and folic acid.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the RCH programme's pediatric iron-folic acid tablets contain **20 mg elemental iron and 100 mcg folic acid**. This is crucial for preventing and treating iron deficiency anemia in children, which is a significant public health concern in many regions.

## Correct Answer Line
**Correct Answer: C. 20 mg elemental iron and 100 mcg folic acid.**