Consider the simple $3-$station assembly line illustrated below, where the $2$ machines at Station $1$ are parallel, i$.$e$.,$ the product only needs to go through one of the $2$ machines before proceeding to Station $2.$

What is the bottleneck time of this process?

A$.12$min.

B$.20$min.

C$.38$min.

D$.6$min.

E$.10$min.

$10.$ In the above question, what is the throughput time of this process?

A$.12$min.

B$.20$min.

C$.38$min.

D$.18$min.

E$.58$min.

$11.$ Suppose that the demand in period $1$ was $7$ units and the demand in period $2$ was $9$ units. Assume that the forecast for period $1$ was for $5$ units. If the firm uses exponential smoothing with an alpha value of $20,$ what should be the forecast for period $3?($Round answers to two decimals.$)$

A$.9\mathrm{.}00$

B$.3\mathrm{.}72$

C$.9\mathrm{.}48$

D$.5\mathrm{.}00$

E$.6\mathrm{.}12$

$12.$ Service level is:

A$.$ the probability of stocking out.

B$.$ the probability of not stocking out.

C$.$ something that should be minimized in retail.