If a patient with a preferred provider organization (PPO) chooses to use a non-PPO provider,...

Detailed Answer in Step-by-Step Solution:

In a PPO, using a non-PPO provider (out-of-network) leads to higher out-of-pocket expenses (A) due to lower reimbursement rates and potential excess charges.

Option B (full cost) is inaccurate; some coverage applies. Option C (100% reimbursement) is false. Option D (waiting period) is unrelated.

The Virginia study guide reiterates that PPOs cover out-of-network care but at a reduced level, increasing the insured’s costs compared to in-network use. Reference: Virginia Life, Annuities, and Health Insurance study guide, section on "Managed Care Plans."