Former badminton world number one Lee Chong Wei has announced his retirement. Chong Wei represented _____ nation in the sport ?

a) South Korea
b) China
c) Indonesia
d) Malaysia

Malaysian Badminton star Lee Chong Wei announced his retirement on June 13, 2019, ending a career that was marked by 348 weeks as world number one. The 36-year-old was diagnosed with early-stage nose cancer last year and after intensive treatment in Taiwan.