An engineer measures the peak current (in microamps) when a solution containing an amount of nickel (in parts per 106 ) is added to a buffer. The experiment was repeated for eleven different values of nickel solutions. A scatterplot showing the data is given below: Suppose a regression line was added to the plot above. If an additional measurement had been taken with the nickel of 62 parts per 106 and a peak current of 0.38 microamps, adding this observation would: A. decrease the intercept, decrease the slope. B. decrease the intercept, increase the slope. C. increase the intercept, increase the slope. D. increase the intercept, decrease the slope.