Which of the following is a true statement?

A)The wall of the lymphatic capillary consists of a multiple layer of flattened endothelial cells.
B)Lymphatic and blood capillary networks are dependent on each other.
C)Lymph from the entire body, except the upper right quadrant, drains eventually into the thoracic duct.
D)The thoracic duct is approximately the same size as the large veins.