Which sentence best shows correct comma usage?

A.
Marcus wants, a digital camera, but he can’t decide on the model.

B.
Marcus wants a digital camera, but he can’t decide on the model.

C.
Marcus wants a digital camera, but, he can’t decide on the model.

D.
Marcus wants a digital camera but, he can’t decide on the model.

Respuesta :

The answer is B. Marcus wants a digital camera, but he can't decide on the model. 

Answer:

b

Explanation: