This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fungal infections, Subject name: Dental
'Favus' is caused by? 
Select and explain. 
A. T. schoenleinii, B. T. microsporum, C. Epidermophyton, D. Candida tropicalis
A: T. schoenleinii
Answer: A: T. schoenleinii 
Explanation: Favus Favus is an inflammatory type of Tinea capitis Commonest causative agent T. schoenleinii. Inflammatory (kerion, us) causing scarring/cicatricial alopecia Kerion common in children Tender boggy swelling over scalp, easily pluckable hair and enlarged lymphnode.(causative agent: T. mentagrophyte or T. verrucosum) DOC: Trichophyton - Terbinafine Microsporum spp -griseofulvin