Suppose that P$1=6$kN$,$ P$2=8$kN$,$ and P$3=12$kN $($Figure $1).$Find:Part A:$$Determine the force in member$$BC$$of the bridge truss.Part B:$$Determine the force in member HC$$of the bridge truss.Part C:$$Determine the force in member HG$$of the bridge truss.Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.