Use the below info to answer the questions. Note the use of job numbers instead of letters to represent the activities.

TIMES $($DAYS$)$

JOB NO$.$ PREDECESSOR

JOB$($S$)$ a m b

$1234$

$21123$

$314512$

$413411$

$52135$

$63123$

$74189$

$85,6246$

$982412$

$107345$

$119,10578$

b$.$ What is the critical path? multiple choice $1$

$1-4-7-10-11$

$1-3-6-8-9-11$

$1-2-5-8-9-11$

c$.$ What is the expected duration for the project?