a) Plot the two-phase envelope phase diagram for the natural gas A and B shown in Table 3(a) with explanation given for each plot. Table Q3 (a): Composition of Natural Gas b) Categorize 5 types of pressure taps that can be used with orifice meter with its respective characteristics. [10 marks] c) Identify the best pipeline design over 15 miles transmission with justification, between the two proposed designs depicted in Fig. Q3 (c). [7 marks ] Design 1 L1=L2=L3D1=1in;D2=2in;D3=3in D1=1in;D2=2in;D3=3in Fig. Q3(c): Pipeline's design