Consider the following differences with reference to President of USA and India:
1. Unlike the USA's President, the Indian President can only be removed by the houses of Parliament.
2. The grounds for impeachment are broader in the USA than in India.
3. No President has been impeached so far in both countries.
4. Impeachment of Indian President is implicit in the constitution while that of USA’s President is explicit.
Which of the statements given above are correct?