根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
The Greeting Card Association reports that Americans purchase 6.5 billion greeting cards each year.         Here’s a look at ways to reduce your holiday greeting card costs.
Gold digital.
   Add photos or video to make your e-cards more personal.
   
If you plan to mail your cards, remember to consider postage costs. Square cards look cool,
but they cost more than a regular stamp to mail because they’re not a standard size. If cost is a consideration, stick to rectangular（矩形的）cards and avoid too heavy ribbons that increase your mailing costs.
Look at unexpected sources.
You don’t have to order custom greeting cards with your family’s photo.         Check
dollar stores or even garage sales for affordable greeting cards. The best part is that when these cards don’t have a photo or the year printed on them, you can use any leftovers in the future.
Make your own.
Use old greeting cards(with written messages cut out,of course), wrapping paper and ribbons,
or magazine photos to create your own holiday cards.
Shop after-Christmas sales.
Starting from Dec. 26, sellers who want to clear out holiday stocks will deeply discount cars,
wrapping paper and decorations.   

A．Search for promotion codes.

B．Avoid paying for extra postage.

C．Buy envelopes for your cards for different purposes.

D．And Christmas cards account for a big percentage of that.

E. Preprinted greeting cards can cost less and work just as well.
F. So this is a good time to stock up if you have the storage space.
G. If you’re short of time or money, e-cars could be you best choice.