Why is it important for lymphatic capillaries to be closely associated with cardiovascular capillaries?

• A. They take up the erythrocytes that leak out of the cardiovascular capillaries.
• B. They need to deliver oxygen and nutrients to the cardiovascular capillaries.
• C. They take up some fluid that has leaked out of cardiovascular capillaries.
• D. They need to receive $CO_2$, which is released by the cardiovascular capillaries.