You are answering a USMLE-style medical question. Question: Current recommendations state that a single hemoglobin A1c value of greater than 6.5% is diagnostic of diabetes mellitus. If this 6.5% cut-off is to be increased to 7.0%, which of the following would be true? Options: A) Increase in false negative test results B) Increase in false positive test results C) Decrease in true negative test results D) Increase in true positive test results Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.