This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Takayasu's arteritis with pulmonary arteries involvement is designated as 
Select and explain. 
A. Type I, B. Type II, C. Type III, D. Type IV
D: Type IV
Answer: D: Type IV 
Explanation: (D) Type IV# "Takayasu's arteritis" described as three types on the basis of the location and extent of the arteritis affecting the aorta. In 1977. Lupi- Herrera et al. described an additional variant with pulmonary artery involvement, which they designated type IV.