Answer:
A cording with my Knowledge they take the beaches of Normandy was by By overwhelming number; wave after wave. that's the right answer if and not mistaking.
B is wrong because they did not surprise the Germans because they could see the troops approaching and that give time to prepare better.
C is wrong ether because they might knew the geography but the Germans had the highest positions that give them advantage.
D is wrong also because both army had a heavy weapons but the Germans have a better position to use them.
Can you hit the brain-list thank you. Have a Great day!
So A is the right answer!