C$.$ Short Answer

$1.(5$ points$)$ Describe the meaning of $"3-$DCE".

$2.(5$ points$)$ What is a block chain and what does it do$?$

$3.(5$ points$)$ Give a reason why most managers use Type $2$ service level $($instead of Type $1$ service level$)$ to describe the service level achieved in their organizations.

$4.(5$ points$)$ Describe the SCM strategy that Anheuser$-$Bush adopted in $1990$s based on types of beer produced.