The correct answer is Martina Hingis and Sania Mirza.

• Martina Hingis and Sania Mirza won the 2016 Australian Open Women's Doubles title.

• Top seeds Martina Hingis and Sania Mirza won the title, defeating Andrea Hlaváčková and Lucie Hradecká in the final, 7–6(7–1), 6–3.
• Bethanie Mattek-Sands and Lucie Šafářová were the defending champions, but Šafářová withdrew before the tournament due to a bacterial infection. Mattek-Sands played alongside Sabine Lisicki but lost in the second round to Anastasia and Arina Rodionova.
• Hence, option 3 is correct.

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• Tímea Babos and Kristina Mladenovic won their second Australian 2020 Open title, defeating Hsieh Su-wei and Barbora Strýcová in the final, 6–2, 6–1.
  • Samantha Stosur and Zhang Shuai were the defending champions but chose not to participate together.
  • Stosur played alongside Ellen Perez, but they lost in the first round to Lara Arruabarrena and Ons Jabeur.
  • Zhang teamed up with Peng Shuai, but they lost to Veronika Kudermetova and Alison Riske, also in the first round.