Hello I have an economics math equation and have provided the question via image. I need help with

The gure given below depicts the tax revenue for different tax rates applied by the government. Figure 11.2 100 030 DD 03'! 00 Tax Rate (percent) 43 U! D D (.0 0 AN 00 Tax Revenue Refer to Figure 11.2. If you were a member of the Congress that aims to increase tax revenue collections, what would you recommend if the current tax rate was 80 percent? 0 a. Increasing the tax rate to 90 percent 0 b. Decreasing the tax rate to 30 percent 0 c. Increasing the tax rate to 100 percent 0 d. Decreasing the tax rate to zero percent 0 e. Decreasing the tax rate to 70 percent