Identify the subject and the verb in the sentence. Mary and I washed and waxed the car.
A. ​Subject: Mary ​Verb: washed
B. ​Subject: car ​Verb: ​washed/waxed
C. ​Subject: I ​Verb: waxed
D. ​Subject: ​Mary/I ​Verb: ​washed/waxed