When did Albert canal opened for shipping ?

When did Albert canal opened for shipg ?

A. 1935
B. 1939
C. 1941
D. 1940

The Albert Canal is a canal located in northeastern Belgium, which was named for King Albert I of Belgium. The Albert Canal connects Antwerp with Liège, and also the Meuse River with the Scheldt River. It also connects with the Canal Dessel-Turnhout-Schoten, and its total length is 129.5 kilometres (80.5 mi).