Use the below project info to answer the questions.

ACTIVITY NORMAL TIME

$($WEEKS$)$ NORMAL

COST CRASH TIME

$($WEEKS$)$ CRASH

COST IMMEDIATE

PREDECESSORS

A $2$ $ $501$ $ $70$

B $4802160$ A

C $8704110$ A

D $660580$ A

E $71006130$ B

F $4403100$ D

G $51004150$ C$,$ E$,$ F

Fill in the table to specify the crashing steps needed to minimize the cost of crashing to various project durations. Use project lengths of $18,17,16,15,14,$ and $13$ weeks. For each project length, identify the length of each of the corresponding paths, specify which activity would have been crashed to achieve that project length $($duration $18$ is the starting point, so no activity needed to be crashed$),$ and calculate the crashing and total costs as shown in the table below.