Which is correctly punctuated

The history professor asked, "What famous event happened on April 4, 1968, in Memphis, Tennessee?"

or

The history professor asked, "What famous event happened on April 4, 1968 in Memphis, Tennessee?"

The answer is B) or the second option ''The history professor asked, ''What famous event happened on April 4, 1968 in Memphis, Tennessee?'' because the first option has way too many commas used for a date and place but the second option has the perfect amount needed so therefore its B).'