Consider the figure below for a real-time transmission. There are three packets to be played where first, second and third packets contain 12, 13 and 14 seconds of data, respectively. What is the units in buffer for the second packet at time 28? Server Client Internet 00.00.01 First packet 00.00.00 00.00.12 00.00.14 Second packet 00.00.04 00.00.16 00.00.29 00.00.43 00.00.25 00.00.39 Third packet 00.00.28 00.00.42 Flow Play time Arrive time Send time Select one: a. 10 b. c.12 d. 1 e. 14