If the price of airplane tickets increased by 5% while the prices of other goods and services increased by 10% on average,then the relative price of airplane tickets has

If the price of airplane tickets increased by 5% while the prices of other goods and services increased by 10% on average,then the relative price of airplane tickets has
A) increased 5%.
B) increased 10%.
C) decreased.
D) remained constant.
E) may have either increased or decreased.


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