Mala is sister of Harish. Harish has two daughters: Reema and Seema. Reema is married to Satish. Rekha is the mother of Satish. Below are given a few statements. Based on the given information, select which of the statements is/are definitely true: A : Reema is the niece of Rekha. B : Rekha is the mother-in-law of Seema. C : Mala is sister of Rekha.