You are an assistant tasked with analyzing medical histories to provide a second opinion on possible future diagnoses.

<PatientData>
Demographics: {'race': 'Black or African American', 'gender': 'MALE', 'year of birth': 1961}
</PatientData>
Based on the trajectory above, which diagnosis is the patient **most likely** to receive by 1988-05-02?
A. Chronic obstructive bronchitis (disorder)
B. Diabetic renal disease (disorder)
C. Malignant tumor of colon
D. Nonproliferative diabetic retinopathy due to type 2 diabetes mellitus (disorder)
E. Stroke
Please share a single capital letter representing your selected answer: 
Chronic obstructive bronchitis (disorder) Diabetic renal disease (disorder) Malignant tumor of colon Nonproliferative diabetic retinopathy due to type 2 diabetes mellitus (disorder) Stroke