what is file extension bcf?

How would the previous sentence be correctly capitalized?
Answer: What is File Extension BCF?
first simplify and remove the innermost bracket.

How would the previous sentence be correctly capitalized?
Answer: First simplify and remove the innermost bracket.
combined reel slitting and re-reeling machines, for making up paper pulp, paper or paperboard

How would the previous sentence be correctly capitalized?
Answer: Combined reel slitting and re-reeling machines, for making up paper pulp, paper or paperboard
one of the big issues in the gdpr is how data comes in. here are two options:

How would the previous sentence be correctly capitalized?
Answer: One of the big issues in the GDPR is how data comes in. Here are two options: