I need all $4$ questions answered please!!!

The following information has been gathered for a project to install a new machine lathe at Diamond$$ Manufacturing, Inc:

$$

Activity Activity Time $($Days$)$ Immediate Predecessor$($s$)$

A $5-$

B $9$ A

C $11$ B

D $11$ B

E $5$ D

F $8$ C$,$D

G $11$ F$,$E

Q$1$: Which one of the following Project Management Techniques will you choose to determine activity network and critical path for the project?

A$.$ Critical Path Method $($CPM$)$ because the project had deterministic times.

B$.$ Program Evaluation & Review Technique $($PERT$)$ because we must consider probabilistic times for projects.

C$.$ Six Sigma approach because it gives the least cost solution.

D$.$ None of the above

Your Answer: $\_\_\_\_\_\_\_\_\_\_\_$

Q$2$: Choose the correct network diagram for this project:

Your Answer: $\_\_\_\_\_\_\_\_\_\_\_\_$

Q$3$: The critical path for the project is:

A$-$B$-$C$-$F$-$G

A$-$B$-$D$-$F$-$G

A$-$B$-$D$-$E$-$G

Both A$-$B$-$D$-$E$-$G and A$-$B$-$D$-$F$-$G

Both A$-$B$-$C$-$F$-$G and A$-$B$-$D$-$F$-$G

Q$4$: Describe how cost, quality, and time interplay eith each other in managing projects? When shoukd a project manager be willing to spend more money to expedite a project?