Which of the Following Are True of Yellow Bone Marrow

Which of the following are true of yellow bone marrow? 1. It is the main site of blood cell production.
2) It is located in the medullary (marrow) cavities of long bones.
3) It is located in hipbones, sternum, ribs, and vertebrae.
4) It is a site of energy storage in the form of triglycerides.
5) It becomes more abundant relative to red bone marrow with increasing age due to the conversion of red bone marrow to yellow bone marrow.

A) 1 and 3
B) 1 and 2
C) 1, 2, and 5
D) 2, 4, and 5