Read this excerpt from act i, scene i, of richard iii: now is the winter of our discontent made glorious summer by this sun of york; and all the clouds that lour'd upon our house in the deep bosom of the ocean buried. now are our brows bound with victorious wreaths; our bruised arms hung up for monuments; our stern alarums changed to merry meetings, our dreadful marches to delightful measures. what is the meaning of the phrase "the clouds that lour'd upon our house"?

a. bad weather

b. misfortunes

c. a tragic loss

d. a storm

e. shadows