Membrane fractions of skeletal muscle and adipose tissue were purified.Before purification the samples were exposed to insulin or glucagon.The samples were then analyzed via Western blotting using antibodies against GLUT4 and GLUT2.A loading control was included in the analysis.The results are shown below.Assume that sample A is skeletal muscle.Which sample corresponds to skeletal muscle that has been exposed to insulin? Explain your choice. 
Definitions:
Triangular Distribution
A probability distribution shaped like a triangle, which is used to model variables that have known minimum and maximum values and where the mode can be estimated.
NPV Forecast Chart
An NPV Forecast Chart predicts the Net Present Value over time, helping in assessing the profitability of investments.
Cumulative Profit
The total amount of profit earned over a specific period, taking into consideration all revenues and costs.
NPV Forecast Chart
A visual representation forecasting the Net Present Value of a project or investment over time, depicting the expected profitability.
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