How do you set the custom status on orders placed with the new payment method?

You are developing a new payment method. It is required that any new order created with this payment method needs to have a specific custom status. Assume the status has been added to the system already, assigned to the processing state, and the new order state for the payment method is processing.

How do you set the custom status on orders placed with the new payment method?
A . Add a custom status code to the Magis the correct way to modify the Ul componeentoSalesModelOrder-Payment class as a $newOrderStatus constructor parameter using di.xml
B. Create a system configuration option order.status and set the status code as its value
C. Create an observer for the event sales_order_set_status, get the $status parameter and set the new status using $status->setStatus()
D. Create a command setOrderStatus and add it to a commandPool with a name set_status

Answer: C