Which of the following statement correctly describe cardiac catheterization? Select all that applies.

a. During cardiac catheterization a long, thin, flexible tube called a catheter is put into a blood vessel in your arm, groin or upper thigh, or neck.
b. During cardiac catheterization a long, thin, flexible tube called a catheter is put through the chest wall and into the heart.
c. When a blockage is detected, a stent can be put in during the cardiac catheterization procedure.
d. Open heart surgery is less invasive than cardiac catheterization.