Write the next sentence in the following story.

How to make a s'more
Start your grill, campfire, or wood fireplace.
You can make your s'mores over any sort of fire. Keep in mind, however, that the fuel you use may also influence the flavor of the marshmallow.

Choices:
[A]. If you are working outdoors, make sure to follow safety precautions by having water or fire extinguisher near by, and to avoid windy days. If you are making a campfire, be sure to use clean, dry wood, and to properly rein in the fire with a ring of stones..
[B]. Lift the lid of the s'more container and set the lid on the bowl. This will prevent the fuel from sputtering or ruining the finish of the s'more..
[C]. Let the temperature of the fire entirely dictate the marshmallow's flavor. Preheat your grill to medium-high heat..
[D]. Because of this, it's a good idea to place your s'more in a separate container if you're making a s'more directly from a charcoal grill. Ensure that your s'more has a temperature that is within two to three degrees celsius or higher... The answer should be
[A].