Choose from options: Determine if the sentence is true based on the text below:
Salt is difficult to extract from the earth

Tunisia's sovereignty over its natural resources has become a controverisal issue after the 2011 revolution. One of the most notorious cases that has sparked outrage is the allowance given to a French company to extract Tunisian salt for the same price since 1949.
OPT: [+] Yes. [+] It's impossible to say. [+] No.
It's impossible to say