Costs associated with two alternatives,code-named Q and R,being considered by Lang Corporation are listed below: 
Required:
a.Which costs are relevant and which are not relevant in the choice between these two alternatives?
b.What is the differential cost between the two alternatives?
Definitions:
Flip Charts
A set of large paper sheets on a stand used for displaying information during presentations.
Brainstorming Sessions
Group activities aimed at generating creative ideas or solutions to problems through spontaneous and unrestrained discussion.
Group
A number of individuals or items that are located, gathered, or classed together.
Color
A property of light as seen by people, typically characterized by hue, saturation, and brightness.
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