True or false? Are there three levels of opting in types?

True or false? Are there three levels of opting in types?   True or false? Are there three levels of opting in types?   True   False   The post True or false? Are there three levels of opting in types? appeared first on Certification Answers. More info: http://bit.ly/2LFGBSx
True or false? Are there three levels of opting in types?