They really want to know your credit worthiness, the loan to value in the property and your plan to pay them back. good luck! 

look carefully at downside risk and upside...creditworthiness of tenant, likelihood of replacement if they leave since vacancies can be long, surrounding options for businesses to relocate etc.

If you have all of your entitlement available for use, there is no limit on what you can borrow with a VA loan as long as your DTI stays within your lenders range which is typically 60% and sometimes 65% depending on lender, reserves, and credit worthiness.

4.What is the creditworthiness of the buyer and are there any bankruptcy filings?

It would improve your credit worthiness, for you would own an income producing asset. 

I suspect your credit union is trying to find creative ways to not do business with you that has nothing to do with your creditworthiness.

And given that most borrowers have equity, and new borrowers/buyers are credit worthy, even a rise in interest rates will not counteract the basic supply and demand.That being said, I agree that I would not be a buyer, at least as a rental.  

You are using your credit worthiness to acquire a loan.

You qualify for these loans based on your credit worthiness and the cash flow of the property.

By "B", do you mean sound property, and creditworthy tenant, and if so I'd be assuming that there wouldn't be constant repairs, or trouble collecting rent?