About the coverings of kidney, which of the following descriptions are correct?
选项：

A:From superficial to deep, three layers of coverings of kidney are fibrous capsule (纤维囊), adipose
B:The renal fascia is divided into anterior and posterior layers to enclose the kidney and suprarenal
C:The adipose capsule acts as a “spring cushion” to protects and support the kidney.
D:The fibrous capsule is difficult stripped from a normal kidney.
E:The coverings of kidney have the function to maintain the kidney in the normal position.