Arush is the son of Ambika; Ambika and Avani are sisters; Aarti is the mother of Avani and Aman is the son of Aarti. Which of the following statements is true?
1
Aman and Arush are cousins
2
Aman is maternal uncle of Arush
3
Avani is the maternal grandmother of Arush
4
Ambika and Aarti are sisters