You Are Tasked with Creating an Internal Standard Calibration Curve

You are tasked with creating an internal standard calibration curve. For the first calibration level, the concentration of the analyte is 25.0 ppb. The concentration of the internal standard is 50.0 ppb. What is the concentration ratio value that will be used to plot the first data point?

A) 0.500
B) 1.50
C) 0.750
D) 2.00
E) none of the above