Consider the product structure tree shown below: 
-Assume that the company using this product structure tree has 5 items each at the 0 level,10 items each at the 1 level and 20 items each at the 2 level.How many units of A,B,and E will the company need to acquire in order to ship an order of 20 X's?
Definitions:
Loudness
The perceived strength or amplitude of sound by the human ear, often measured in decibels.
Content
The information, subjects, or topics covered within a book, document, conversation, website, or other forms of communication.
Vocalization
The action of producing sounds or utterances as a means of communication among humans or animals.
Anger
A strong feeling of annoyance, displeasure, or hostility.
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