Explanation:

- The financial year in India spans from April 1 to March 31 of the following year.

- This aligns with the government’s budgeting and accounting processes.

- Option 1: April 1 to March 31 is correct.

- Many countries follow a calendar year for their financial year.

- However, India doesn't use the January 1 to December 31 timeline.

- Option 2: January 1 to December 31 is incorrect.

- An October to September financial year is not used in India.

- This is often seen in companies or regions with seasonal considerations.

- Option 3: October 1 to September 30 is incorrect.

- None of the above wouldn't apply, as option 1 is accurate for India.

- Option 4: None of the above is incorrect.