Answer the subquestions, please. and please explain your answer. I would really appreciate that. Thank you!

Q.2 Read the following description of the use of terminals in an information processing system, then answer the subquestion, Company S, engaged in the tourist business, has three sales offices, A, B, and C, in the Tokyo metropolitan area. These offices have 6, 5 and 9 dedicated terminals, respectively, which are connected via communication lines to the computer at the head office (see Figure). The company is considering increasing the number of terminats because the waiting time for connection and processing has recently become longer due to the increased frequency of use of those terninals Assuming the number of terminals as M and the number of terminals used on average as U, the average use ratio of terminals, 2, is given by UM. The average waiting time, w (second), for the average use ratio a and the M number of terminals, given by Wu x T using Wu, as shown in the table below, and the average process time per datum, T (sec.). The values of U, or the average numbers of terminals used at sales offices A, B and Care 5.044, 4.20 and 8.10, respectively, and the average process time per datum is 30 sec. Head office computer Office A 6 terminals Office B 5 terminals Office 9 terminals Figure : Flow of Information at Company S Subquestion Select from the answer groups below the correct answers to insert in the blanks in the following statements. (1) The average use ratio at Office A is a - U/M=5,04/6 0.84. Wu, obtained from the table for 0.84, is multiplied by average process time I to give the average waiting time of 31.35 sec. (W = Wu x T -0.627 * 50). To reduce the average waiting time at Office A to less than 10 sec., it is necessary to install a minimum additional terminals. (2) The average waiting time of terminals at Offices A, B and C is characterized by the proportional relationship of (3) If an additional terminal is installed in each office, the proportional relationship for average waiting time at Offices A, B and Cis Answer group for a: a) 0 b) 1 c) 2 d) 3 e) 4 Answer group for band c: a) A