Most of the times, I have seen that 'reason being' is used in the middle of a sentence with a fixed expression 'the reason being is that'. As reason being is similar to 'because', can we use it in the starting of a sentence? Consider this sentence :
For non-living things, the apostrophe + s is not used. Reason being, non-living things cannot own things.
For non-living things, the apostrophe + s is not used. The reason being, non-living things cannot own things.
For non-living things, the apostrophe + s is not used, the reason being is that non-living things cannot own things.
Which ones are correct among these examples. I am also confused that do we need to use 'the' before 'reason being' when we use it to start a new sentence and is the comma usage correct in the third sentence?