If you tear the aortic valve in heart surgery can you fix it in time?

"Once your surgeon has found the tear, manmade (synthetic) grafts can replace the damaged parts of the aorta. If your aortic valve is damaged, your surgeon may also insert a replacement valve. When your surgeon has made all of the repairs, he or she will remove the heart bypass machine and close your incision."

Explanation:

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answer; ///i do believe that the correct answer is (a); //they are not