Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.I am sure he did not know that his brother graduated with flying colors.
A.That his brother graduated with flying colors must have been appreciated by him.
B.He should not have been envious of his brother’s achievement.
C.He may not know that his brother is flying gradually up in a colorful balloon.
D.He cannot have known that his brother graduated with very high marks.