On a multi$-$unit condominium project, the project manager is considering four alternative locks for the exterior doors of the units. Complete the evaluation grid shown in Figure $18\mathrm{.}4$ to determine which lock is rated highest according to the values outlined on this chart.

Figure $18\mathrm{.}4$ Door Lock Evaluation

Part$2(14$ points$)$ Complete the value analysis for the following two stages of the example III in the lecture notes $($see page $33-34).$

$1)$ Speculative phase: list at least six alternatives

$2)$ Development phase: estimate the cost for each alternative $($Please show your solutions$)$