About the pericardium, which of the following descriptions are correct?

A、It is a fibrous sac which encloses only the heart.
B、It consists of the fibrous pericardium and serous pericardium.
C、The serous pericardium can be subdivided into visceral layer (脏层) and parietal layer (壁层).
D、The pericardial cavity is a potential space between the fibous pericardium and serous pericardium.
E、The transverse sinus and oblique sinus are located within the pericardial cavity.