CORRECTED @ QUESTION: ADJUSTMENT OF STATUS

I RECENTLY GOT MARRIED TO AN AMERICAN CITIZEN. BEFORE MARRIAGE, MY STATUS WAS F-1 STUDENT. NOW THAT I AM MARRIED, I MUST DO THE ADJUSTMENT OF STATUS PAERWORK. QUESTION: MY MARRIAGE CERTIFICATE SHOWS MY NAME AND MY HUSBAND'S NAME BUT NOWHERE DOES IT STATE THAT MY LAST NAME IS NOW MY HUSBAND'S LAST NAME. ON THE ADJUSTMENT OF STATUS PAPERWORK, IF I SUBMIT A MARRIAGE CERTIFICATE WITH MY PAPERWORK, DO I USE MY LAST NAME AS STATED ON THE MARRIAGE CERT OR DO I USE MY HUSBAND'S LAST NAME NOW THAT WE ARE MARRIED?