Answered

Which answer does not correct this run-on sentence?

Last summer Jim mowed just one lawn, now he mows three.



A.
Last summer Jim mowed just one lawn. Now he mows three.


B.
Last summer Jim mowed just one lawn; now he mows three.


C.
Last summer Jim mowed just one lawn now he mows three.


D.
Last summer Jim mowed just one lawn, but now he mows three.