Which sentence does not correct this run-on sentence? 


Kenny's dad has a collection of guitars sometimes he lets us play them.



 
A.
Kenny's dad has a collection of guitars, and sometimes he lets us play them.


 
B.
Kenny's dad has a collection of guitars, sometimes he lets us play them.


 
C.
Kenny's dad has a collection of guitars. Sometimes he lets us play them.


 
D.
Kenny's dad has a collection of guitars; sometimes he lets us play them.