In this section of his speech, Churchill discusses the losses Great Britain suffered in the Battle of Dunkirk. Which of the

following details is NOT essential to the main idea of this paragraph?

"Our losses in material are enormous."

B. "We can set a far heavier loss certainly inflicted upon the enemy."

"We have lost nearly as many guns-nearly one thousand and all our transport."

"This loss will impose a further delay on the expansion of our military strength."