Explanation:

Both statements are correct.

About Haemophilia A:

• Hemophilia A (classic hemophilia) is one of three types of hemophilia, a rare, inherited blood disorder.

• It happens when your blood doesn’t clot as it should, which is when bleeding stops or slows down.

• It is a sex-linked disorder. The gene for haemophilia is carried on the X chromosome.

Causes:

• When you bleed, a series of reactions take place in the body that helps blood clots form. This process is called the coagulation cascade.

• It involves as many as 20 different special proteins called coagulation, or clotting, factors. 

Symptoms:

• The severity of symptoms varies. Prolonged bleeding is the main symptom.

• Bleeds can occur internally,in joints and muscles, or externally, from minor cuts, dental procedures, or injuries.

Treatment:

• It is treated by boosting clotting factor levels or replacing missing clotting factors (replacement therapy).

• Other treatments may include medications to promote clotting or surgery to repair damage caused by bleeding.

Hence option 3rd is correct.