Step 1: Understanding the Concept
Haemophilia is an X-linked recessive disorder in which a clotting factor (VIII or IX) is missing.
Step 2: Key Point
Blood does not clot properly, so even a small injury leads to continuous bleeding.
Step 3: Compare the options
Clotting is normal in healthy people, and anaemia and change in RBC shape belong to other disorders.
Final Answer:
Haemophilia shows continuous bleeding even from minor injuries.
\[ \boxed{\text{(A) }\text{Continuous bleeding even with minor injury}} \]