John is an employee with a low income, but he has just signed a contract for a 7-year project that would pay a very high salary. After the contract ends, John will return to his low income. He wishes to purchase a life insurance policy that provides him protection for the rest of his life. He also wants this policy to include an element of saving. Given the case of John, briefly explain (in a few sentences) why a Limited-payment life insurance would be a very good option for him