Step 1: Understanding the Concept
Chronic kidney disease develops slowly over months or years.
Step 2: Check the statements
It is progressive and generally irreversible, which is correct.
It shows a decline in glomerular filtration rate, which is correct.
Shrunken kidneys help detect it, which is correct.
Step 3: Find the wrong one
Sudden kidney failure after severe bleeding is acute kidney injury, not chronic kidney disease. So that statement is incorrect.
Final Answer:
The statement that it happens suddenly after severe bleeding is incorrect.
\[ \boxed{\text{(B) }\text{It happens suddenly after severe bleeding.}} \]