Multi-choice problem: Continue writing the next sentence in this paragraph:

How to lighten your bmx bike
Analyze your bike.
Do you really need all those parts? Some cheap bikes come with unnecessary parts that can all be removed. Even though these parts could weigh next to nothing, in total they all add up.

Options are:
[A]. Definitely bring a small duffel bag, or even a cardboard box if you plan to stuff with room to spare. Never forget to bring box if you're going to ride your bmx bike..
[B]. Be sure you know what the different parts are and what they do when analyzing the bike--never remove anything vital. Some unnecessary parts include: chain guards, reflectors, lights, detanglers, brakes and possible stunt pegs..
[C]. Think carefully about what parts you are willing to put in and what parts you aren't willing to put in storage. You will always need at least five parts fuel-meter, gas filter, cable from a burger pan, battery-operated engine, electrical panel, drain tank, body parts, and other parts you need..
[D]. If you needed bike parts, write down why they got there and what each is worth. Some of the bigger things, like the wheels, you'll want to add in..
[B].