This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Granulation tissue comprises of: 
Select and explain. 
A. Fibroblasts, B. Small blood vessels, C. Macrophages, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: The combination of proliferating fibroblasts, loose connective tissue, new blood vessels and scattered chronic inflammatory cells, forms a type of tissue that is unique to healing wounds and is called granulation tissue. This term derives from its pink, soft, granular gross appearance, such as that seen beneath the scab of a skin wound.
Robbins Pathology 10th ed page no 90