Complete the sentence about Lotte World Tower with the correct year: On March 17, ______, before the final phase of external construction, the diagrid lantern-shaped roof structure was completed.

Answer and explanation

Correct answer: C. 2016

On 17 March 2016, before the last phase of exterior work, the diagrid lantern-shaped roof structure of Lotte World Tower was completed. It was built from steel pieces of 12 m, each weighing 20 tonnes.

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