My father in law works in a PSU, he will retire in July 2024, he won't get any pension, he will get an approximate amount of 55 lakhs after his other loans deduction. He intends to receive a sum of 30000 per month, so what are the best investment options for him, he wants a conservative approach, at the same time he intends his money to grow on yearly basis, so please let me know the exact schemes he should invest