A 54-year-old man with a 30 pack-year smoking history presents with new onset gross painless haematuria. He has no dysuria or flank pain. Which is the most appropriate next diagnostic step according to Canadian urologic cancer evaluation principles?AEmpiric treatment for urinary tract infection with antibiotics and repeat urinalysis in 2 weeks.BRenal and bladder ultrasound only.CCystoscopy and upper tract imaging to evaluate for urothelial carcinoma.DObservation without investigation because haematuria is self-limited.EUrine cytology alone.Check my answer