Directions : In each of the following questions, a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as
Assertion : After placing comma in the number 56943821 according to International System of Numeration, the number is written as 56,943,821.
Reason : To write a numeral in the Indian System, commas are first put after three digits from the right and then after every two digits.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

To solve the question, we will analyze both the Assertion and the Reason statements step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that after placing a comma in the number 56943821 according to the International System of Numeration, it is written as 56,943,821.
- In the International System, numbers are grouped in sets of three digits starting from the right. The first group is the ones, then thousands, millions, and so on.

2. **Breaking Down the Number:**
- The number 56943821 can be broken down as follows:
- 56 million (56,000,000)
- 943 thousand (943,000)
- 821 (821)
- When combined, this gives us 56,943,821.

3. **Understanding the Reason:**
- The reason states that to write a numeral in the Indian System, commas are first put after three digits from the right and then after every two digits.
- In the Indian System, the first comma is placed after three digits (ones, tens, hundreds), and subsequent commas are placed after every two digits (thousands, lakhs, crores).

4. **Comparing Assertion and Reason:**
- The assertion is correct as per the International System of Numeration.
- The reason is also correct, but it describes the Indian System of Numeration, which is not relevant to the assertion.

5. **Conclusion:**
- Both statements are true, but the reason does not correctly explain the assertion because it refers to a different system of numeration.

### Final Answer:
- The correct answer is: **Both the Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.**