Multi-select problem: How does the next paragraph end?

How to clean your egr valve
Clean and inspect the vacuum hose.
Remove the vacuum hose and inspect closely for wear (cracks or weak spots), then clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted.
Inspect the egr valve for damage.

Choose your answer from:
i. Loosen any bolts fastening the egr valve to the engine. Inspect the gasket lining the bottom plate of the valve.;
ii. A simple fender-width compressed toothbrush nozzle is all you need. For small flaws, a plastic rubbing brush attached to a nozzle will also work.;
iii. Replace the pipe cleaner that previously blocked the valve. If this occurs, replace the pipe cleaner with wire cleaner.;
iv. Examine its fittings and hoods for any cracks. Look for dents and scratches if you need to repair with a pipe cleaner or cleaning gloves.;
i.