What is a hibernoma, and how does it typically appear on imaging studies?
A) A malignant soft tissue tumor with high vascularity, commonly found in the thigh.
B) A benign tumor of adipose tissue, often seen in the thigh, with a density between fat and muscle on CT and high T1 signal on MRI.
C) A type of liposarcoma with mature fat content and a homogeneous appearance on imaging.
D) A rare tumor of bone marrow, characterized by low signal intensity on T1-weighted MRI.