38 year old male underwent a tooth extraction at a local dental camp. After few days he develops fever and trismus. On local examination, there is a swelling at the angle of jaw . He has a poor oral hygiene and tonsils were pushed medially .No membranous covering or discharging sinus were seen around tonsils. Most likely diagnosis in this condition would be ?
Peritonsillar abscess Retropharyngeal abscess Parapharyngeal abscess Ludwig's angina