John is worried that someone may be able to randomly guess his online banking password. His bank requires that each password contain five characters. Each character of the password can be a letter or a number from 0 to 9. If no two letters or numbers can be duplicated for the password, which expression below would represent the number of possible passwords ? A. 35 * 34 * 33 * 32 * 31 B. 26 25 24 23 22 D. 36 * 35 * 34 * 33 * 32