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

How to use airdrop on iphone or ipad 
Swipe up from the bottom of your device's screen. 
This will bring up your iphone or ipad's. 
Tap the bluetooth button.

pick from the following.
(i). This button looks like a b icon at the top of control center. It will turn blue when bluetooth is turned on.
(ii). This is the button you see next to the device's keypad. A list of all your bluetooth apps will appear.
(iii). This is a red light to the right of the home button (usually on the upper right corner of your screen). Tapping this button will open the " bluetooth " menu on your device.
(iv). This button is located above the contents, on the bottom-right corner of your screen. If you haven't already enabled airdrop, tap it, then tap.
(i).