You Have a Choice Between Receiving $500 Now and $530

Multiple Choice

You have a choice between receiving $500 now and $530 in six months' time.Current interest rates are 10% p.a.(simple interest) .As a rational investor,which option would you choose and why?

A) $500 now,because receiving $530 in six months' time is equivalent to earning only 6% interest,whereas in the bank you can earn 10% interest.
B) $530 in six months' time,because $500 invested for six months is only worth $525.
C) $500 now,because it would be worth $550 in six months' time.
D) $500 now,because you have the option to invest or consume goods.