Who among the following have won the women's and men's single

Who among the following have won the women's and men's single titles, respectively at Australia Open-2015 ?

1. Maria Sharapova and Andy Murray
2. Serena Wiliams and Novak Djokovic
3. Maria Sharapova and Novak Djokovic
4. Serena Williams and Andy Murray

Serena Williams and Novak Djokovic has have won the women's and men's single titles, respectively at Australia Open -2015.