Refer to the attached $2$ tables below $-$ one is actual costs and one is budgeted costs to answer the below questions:

$($Amounts are in thousands of dollars$).$

a$)$ What is the TBC for the entire $10-$week project? $(2$ marks$)$ Use Fig$\mathrm{.}5\mathrm{.}6$ to answer this question.

b$)$ What is the cumulative budgeted cost at end of week $6?(2$ marks$)$ Use Fig$\mathrm{.}5\mathrm{.}6$ to answer this question.

c$)$ What is the cumulative actual cost at the end of week $6?(2$ marks$)$ Use Fig $5\mathrm{.}7$ to answer this question.

d$)$ Determine whether there is a cost overrun or underrun and how much? $(4$ marks$)$ Use both figures to answer this question.

e$)$ What is causing it$?($here you need to look at Tasks $1,2$ and $3$ and compare to the budget for each task to determine what is driving the change vs budget$)(4$ marks$)$ Use both figures to answer this question.