A worm is designed to spread * O from computer to computer. . from file to file on a computer. from Web site to Web site. O from Web site to computer When Building an e-commerce presence, one of the most important management challenges is to: * develop a detailed budget for the e- commerce presence. have a rough idea of the time frame O for developing the e-commerce presence. know how to choose the right O technology to achieve the e- commerce business objectives. consider the platforms and O activities associated with each of the four kinds of presence