Answer:
A. Includes citations for all the sources that support it.
The National Solar Observatory is a public research entity whose mission is to engage in the development of the knowledge of the Sun.
The institution is currently evoked to the construction of the Daniel K Inouye Solar Telescope, which is located on the island of Maui, in the State of Hawaii. The project started in January 2013.
The initial phase of the construction involved the civil works. Specifically the telescope housing, which was completed in September 2013.
The second phase involves the actual installation of the telescope. The first mirror, which has a thickness of 75 mm and a diameter of 12 meters was delivered to the site on August 2, 2017. The process is expected to conclude by early 2019, with the reception and further installation of the second mirror.
Normandy landing part of WWII. However you could just call it Normandy Landing. Hope this helps.
