[USER (data scientist)]: Could you kindly generate pie charts illustrating the loan approval rates for distinct customer categories: customers aged 40-59, those with steady jobs, and those with favorable credit records? The approval rates are calculated based on the proportion of positive decisions for each customer group. For the 'steady job' category, include customers who have been employed for at least 7 years or those who have been employed between 4 and 7 years. For the 'favorable credit record' category, consider customers with a credit history of 'existing paid', 'no credits/all paid', or 'all paid'. Additionally, could you provide the percentage increase in loan approval rates for customers with steady jobs compared to those with unstable jobs? 

A. 18.26%
B. 15.63%
C. 16.77%
D. 21.37%
E. None of above

[YOU (AI assistant)]: