Read the passage and answer the below question:At last the bomb was made. The site chosen for the test explosion was the desert region two hundred miles from Los Alamos. Ten seconds before Zero hour, a green flare warned the spectators to keep down. Then came the blinding flash. The whole area was suddenly brighter than the brightest daylight, and the bomb was a ball of fire. Then came thetremendous roar and the heavy pressure wave, which knocked down two men outside the control center. And then came the cloud - the mushroom cloud, all the colours of the rainbow, ironically beautify, surging up to over 40,000 feet-over 10,000 feet higher than Everest.The passage uses many words and phrases dealing with colour and light. This is because the writer wants to

• A. suggest that the event took place at night
• B. convey to us his own sense of satisfaction
• C. indicate that humanity has achieved something really great
• D. make us see vividly the entire cycle of events