Answer:
The correct answer is letter "C": are no better off or worse off than you were in 2007 as the purchasing power of your salary has remained the same.
Step-by-step explanation:
The Purchasing Power expresses money's value by defining the number of goods and services someone can buy. Inflation, the rate in which prices rise, diminishes purchasing power. It would gradually decrease over time in a growing economy as goods as services become more expensive.
In the case given, the rise in the prices will not affect the purchasing power since both factors doubled in the same year.