Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts can be rearranged to form a meaningful and grammatically correct sentence. Opening and Closing sentence indicate the start of the paragraph and end of the sentence paragraph. Opening Sentence: The immediate context of the Dunkirk evacuation was Germany’s invasion of the Low Countries and northern France in May 1940. P. The Dutch defenders fell back westward, and by noon on May 12 German tanks were on the outskirts of Rotterdam. Q. The Dutch Queen Wilhelmina and her government left the country for England on May 13, and the next day the Dutch army surrendered to the Germans R. On May 10 the German blitzkrieg attack on the Netherlands began with the capture by parachutists of key bridges deep within the country, with the aim of opening the way for mobile ground forces.  S. The invasion of Belgium also began on May 10, when German airborne troops landed on the fortress of Eben Emael, immediately opposite Maastricht, and on bridges over the Albert Canal.  Closing Sentence: On May 11 the Belgian front was broken, and German tanks ran on westward while Belgian, French, and British divisions fell back to a line between Antwerp and Namur.