单选题：Saving MoneyWhere you save your money often depends on what

Saving MoneyWhere you save your money often depends on what you are saving for If you are saving to buy a CD（光盘）or to go to a concert, then probably you would keep your money somewhere in your room.
If you are saving for a big purchase like a mountain bike or a school trip，where would you save your money?
One place to save money is the bank Putting your money in a savings account will help your money early more money If you put your money in a piggy bank（猪形储蓄罐），one year later you’11 still have the same amount of money you put in．If you put your money in a savings account，one year later, you’ll have more money than you put in Why?
When you keep your money in a bank，your money earns interest．Interest is the amount of money a bank pays you to use your money．The bank uses your money （and the money of other people，too）to loan money to people and businesses．
The bank will send you a statement several times a year A bank statement tells you how much money you have in your account，It also tells you how much interest you have earned．If you leave your money in the bank，you Can watch it grow!
Another way you can save money is to buy a certificate of deposit or CD．If you have some money that you don’t need to use for a long time，this is a good way to make your money grow．
You Can buy a cd at a bank．You agree not to use the money for a certain period of time That period might be from six months to five years．You Can’t touch your money during that time If you do，you must pay a penalty，or fee.Your money will earn more money if you put it A．in your room
B．in a piggy bank
C．in your pocket
D．in a savings account