Answer:
b. double taxation.
Explanation:
This phenomenon is extended to other areas of the economy as well.
A car may be subject to determinate taxes which makes a portion of their final price. (sales tax and other)
This price with taxes its latter use to determinate the wealth and then, the owner may have to pay taxes based on a price who already have taxes thus, paying taxes on the taxes.
The double taxation should be avoided to make investment more reliable and increase people trust in the well-being of their government.