Jurisdiction M Imposes an Individual Income Tax Based on the Following

Jurisdiction M imposes an individual income tax based on the following schedule. $$\begin{array} { | c | c | } \hline \text { Rate } & \text { Income bracket } \\\hline 5 \% & \$ - 0 - \text { to } \$ 50,000 \\\hline + 8 \% & \$ 50,001 \text { to } \$ 200,000 \\\hline + 12 \% & \$ 200,001 \text { ard above } \\\hline\end{array}$$ Which of the following statements is false?

A) If Ms. Lui's taxable income is $33,400, her average tax rate is 5%.
B) If Mr. Bell's taxable income is $519,900, his marginal tax rate is 12%.
C) If Ms. Vern's taxable income is $188,000, her average tax rate is 7.2%.
D) None of the above is false.