Applying a bug fix: Addressing a security flaw:
Improving ease of use:
Adding new features:
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1.software update(patch)
2.software update(patch)
3.software upgrade(new version)
4.software upgrade(new version)

Applying a bug fix: software update (patch)

Addressing a security flaw: software update (patch)

Improve ease of use: Software Update (new version)

Adding features: Software Update (new version)

This is what I believe the answer is! Hope this helped!

Each mile is 1.60934 kilometer,so 10 miles are 1.60934x10=16.0934 kilometers;