Rafel Nadal Won the 6th Davis Cup Title

Current context: Rafael Nadal has clinched the sixth Davis Cup title in tennis for Spain over Canada at the Caja Mágica in Madrid, Spain.

• He has defeated Denis Shapovalov of Canada by 6-3, 7-6 (9-7) to clinch Spain’s 2-0 win against Canada.
• Roberto Bautista Agut, had given Spain a 1-0 lead by beating Felix Auger-Aliassime 7-6 (3), 6-3 in the first singles match
• Canada was the 1st time finalist fighting for the Davis Cup title
• This was Spain’s first Davis Cup title since 2011
• In 2019 Rafael Nadal won the Australian Open final, the French Open and the US Open and the Wimbledon semifinals

Question: 

Q: 1. Who has won the sixth Davis Cup title 2019?
a. Denis Shapovalov
b. Roberto Bautista Agut
c. Rafael Nadal
d. Felix Auger-Aliassime