Many businesses have clients, suppliers and employees all over the world. Keeping up with the demands of an international corporation would be impossible, or at least incredibly difficult, without a modern communications infrastructure. Today, with e-mail, cell phones, teleconferencing and video chats, it is possible to have a company meeting with clients and employees around the globe, as if they were all sitting in the same conference room. For the travelling businessperson, smartphones and laptops allow them to keep up with their work from wherever they are and always be available to their clients. E-mail in particular has made communication more efficient as the parties do not have to have a conversation simultaneously, and logistics can be taken care of rapidly without getting side-tracked by conversational pleasantries.

Question: A businessperson is always available to their clients, thanks to laptops and Smartphones.
Options:
A. true, B. false, C. uncertain
Answer: "C"