single-aperture spherical telescope called FAST is being developed by which country?

single-aperture spherical telescope  called FAST is being developed by which country?

Options

1) China

2) Laos

3) korea

4) Japan

answer

1) China

Other details

Built in  China’s Guizhou province, the diameter of the telescope’s reflector will be 500 meters and will be made up of 4,450 panels.

Each panel is an equilateral triangle with a side length of 11 metres

it will surpaas Puerto Rico’s Arecibo Observatory which is 305 meters in diameter