New rigs come with Pure Sine or Modified Sine?

Many new Class A coaches come with an inverter. All the specs say that they come with a 2,000 watt or a 3,000 watt inverter. But, they do not say what brand nor do they say if it is Pure sine or Modified sine.

If your rig came with an inverter from the factory, what brand and Pure Sine or Modified?

Thanks.