Answer:
C. I and III only
Step-by-step explanation:
Base on the scenario been described in the question, since I want to have one million dollars in my savings account when I retire, the best thing to do is to invest in a different account that pays high interest, this would enable me to easily reach my target of having $1million in my savings account quickly, and retiring later will also enable me to have more time for my investment to grow to meet my $1milloin target. So I and III are the best option