Let me shed some light regarding your concern, JetBoy.
The Self-Assessment Questionnaires (SAQs) are validation tools designed to help merchants and service providers self-evaluate their compliance with the PCI DSS. Regarding the right questionnaire, I recommend reaching out to your PCI provider. They can discuss in detail which one to use that best fits your business.
The way you process credit cards determines what requirements you need to follow. Find more details in the Self-Assessment Questionnaires (SAQ): Learn about QuickBooks PCI Service.
Here's an article that covers all the details about the Attestations of Compliance, and Attestations of Validation: QuickBooks Online Payments.
In addition, these resources discuss in detail how to protect customer payment card data from suspicious activities and answer frequently asked questions about the payment card industry:
Keep me posted if you have other payments-related concerns or additional questions about PCI compliance. I'm always ready to assist you further.