<prompt> Which of the following describes stage 3 Limb ischemia as per Fontaine classificationWell compensated intermittent claudicationPoorly compensated intermittent claudicationRest painIschemic ulcer  <response>: Fontaine classification of limb ischaemia :Stage 1 : No clinical symptoms.Stage 2 : Intermittent claudication.2a : Well - compensated - Can walk 200 metres.2b : Poorly compensated - Walk only 200 metres.Stage 3 : Rest pain.Stage 4 : Gangrene, ischaemic ulcer. 