challenge: What provinces did Thawisan's father, Phra Phum Phichai, rule?
  
  A. Chiang Mai Province, Ayutthaya Province, and Sukhothai Province
  B. Phitsanulok Province, Phetchabun Province, and Chachoengsao Province
  C. Chaiyaphum Province, Lamphun Province, Mae Hong Son Province, and Kamphaeng Phet Province
  D. Nakhon Ratchasima Province, Ubon Ratchathani Province, and Yasothon Province
  Answer: 