World’s first 3D-printed concrete bridge

Question: Which country started the world’s first 3-D printed concrete bridge recently for cyclists?
(a) China
(b) Japan
(c) Netherlands
(d) Sweden
Answer: (c) 
Related facts:

• On October 17, 2017, the world’s first 3-D printed concrete bridge was inaugurated in the Netherlands, mainly designed for cyclists.
• The length of this bridge is 8 meters (26 feet). Its width is about 12 feet.
• In this bridge, 800 layers of pre-stressedconcrete have been used.
• This bridge is jointly constructed by students of Eindhoven University and BAM Infra, a construction company.

Reference:
https://phys.org/news/2017-10-dutch-world-3d-printed-bridge.html
https://www.theguardian.com/technology/2017/oct/18/world-first-3d-printed-bridge-cyclists-netherlands
http://www.cyclingweekly.com/news/latest-news/worlds-first-3d-printed-cycle-bridge-opens-in-the-netherlands-video-355583