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:
Constipation
A common digestive condition characterized by infrequent bowel movements or difficult passage of stools, often leading to discomfort.
Expressive Aphasia
A language disorder resulting from brain damage, characterized by difficulty in expressing oneself verbally or in writing, despite understanding language.
Visual Analog
A method, often used in research or patient assessment, that utilizes a visual scale to measure subjective qualities, such as pain intensity.
Anticoagulant Therapy
A treatment that uses medications to prevent blood clots from forming in the blood vessels, often used to treat or prevent conditions like deep vein thrombosis, pulmonary embolism, and atrial fibrillation.
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