Which situation can be represented by the equation 4d + 5 = 29?

A.
Marvin worked 4 hours a day plus an additional 5-hour day for a total of 29 hours.


B.
Marvin worked 9 hours a day for a total of 29 hours.


C.
Marvin worked 4 hours one day plus an additional 5 hours for a total of 29 hours.


D.
Marvin worked 4 days plus 5 hours for a total of 29 hours.