A, B and C are three typists, who working simultaneously can type 432 pages in four hours. In one hour C can type as many pages more than B as B can type more than A. During a period of five hours, C can type as many pages as A can during seven hours

• A. 30, 36, 42
• B. 32, 36, 44
• C. 28, 34, 40
• D. 30, 34, 44