On January $1,2023,$ a customer places an order for a new customized vehicle. The contract price is $$45,000.$ The vehicle is delivered to the dealer and customer on April $1,2023.$ What amount of revenue does the dealer record on January $1,2023$ and April $1,2023?$

A$.$ $$22,500$;$$22,500$

B$.$ $$45,000$;$$0$

C$.$ $$0$;$$45,000$

D$.$ $$15,000$;$$15,000$