Dylan is $71$ years old and has $$600,000$ worth of savings. He wants to leave his two sons a legacy of $$300,000$ each on his death. His insurance agent recommends Dylan to pu contract. Which of the following should Dylan purchase first as per the agent's recommendation? bHIKRORITi$9$aY$05$UVWMyNm$5$CYlFndz$09$a$.$ Two separate life insurance policies each with a coverage of $$300,000,$ naming his two sons as the beneficiariesb. O A joint$-$life annuity contract for $$600,000,$ naming his two sons as the annuitants to the contractc. A permanent life insurance policy with a death benefit of $$600,000,$ naming his two sons as the beneficiariesd. O An insured life annuity contract for $$600,000,$ naming his two sons as the beneficiaries