Check your owner's manual. If it says that the car can be "flat-towed" (towed with all four wheels on the ground), then it is fine to EOC with it. If it says that you cannot, then leave the engine on, and coast in neutral.
DFCO results in more drag than shifting to N. So if you don't want to slow down, say you're doing pulse & glide, you would shift to N. If you were slowing down anyway (e.g., coming up to a red light) you might leave it in D to get some DFCO deceleration.
-soD
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