Statement I: True. Raga Malkauns is a pentatonic raga that omits both Re (Rishabh) and Pa (Pancham). Its notes are Sa, komal Ga, shuddha Ma, komal Dha, and komal Ni.
Statement II: False. Inayat Khan and Vilayat Khan are both legendary sitarists but not in a direct guru-disciple relationship. In fact, Vilayat Khan was the son of Enayat Khan, not the disciple of Inayat Khan.
So, only Statement I is true.