With which members did she form the trio Triple H in 2017?
Hyunseung & Psy
Hui & E'Dawn
Hyunseung & Hui
Psy & E'Dawn
Answer
In 2017, HyunA formed the trio Triple H with Pentagon members Hui and E'Dawn. The group released their debut EP, 199X, in May of that year. Their follow-up EP, Retro Futurism, was released in September 2017.