Which is the correct option to complete the sentence below?

Abandoned dog now works at a petrol station

Buying petrol is generally a trivial activity. You fill your car, head into the shop, possibly pick a Kit- Kat or motoring atlas, pay the cashier then set for your destination. Wouldn't the whole process be more enjoyable if there was a dog to brighten up your visit?

(Adapted from http://WIWoI.telegraph,co.uklpets/news-features/dogabandoned- petrol-station-now-works-petrol-statlonl)