Which of the following is the first sentence of the passage?

Directions : Five statements are given below, which are jumbled in any random order. These statements will form a coherent and meaningful paragraph, when arranged in the correct sequence. Arrange the sentences in the right order and answer the questions that follow. (a) The emergence of 4G in the early part of the past decade changed the mobile-telephone landscape. (b) Since the dawn of mobile communication in the early 1980s, companies and consumers have been adapting to new ways of sending and receiving information. (c) This paradigmatic shift let users stream and download videos at speeds three times greater than 3G. (d) The second and third generations added text and multi-media messaging, as well as email services to cell phones. (e) The first-generation technology of this era let people make and receive phones calls through their mobile handheld devices.