"This is what I understand" or "This is how I understand it", etc

Question

Which one of the following statements is correct or do all of them make sense?

System A works independently and does not affect System B. This is what I understand.

System A works independently and does not affect System B. This is how I understand it.

System A works independently and does not affect System B. This is my understanding.

Peter Jennings · Answer

All three are correct and make sense, but it would probably be better to say

My understanding is that System A works independently and does not affect System B.

One Answer