[单选题]The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.


High salaries in the electricity, telecommunications and other monopoly industries have drawn strong criticism in China, where the Gini coefficient now stands at 0.46, exceeding the internationally recognized alarm level of 0.45. So China is considering cutting wages in monopoly industries to reduce the country’s widening income gap. A draft directive document has been worked out for this purpose.

A measure taken to （） the income gap.