The correct answer is The influence of social class on gender discrimination
When we speak of social class in sociology, we are automatically compelled to think of the work of Karl Marx, who, in criticizing capitalism, states that capitalist society would be divided into social classes, one proletarian and the other bourgeois. Generally speaking, the former would be responsible for the workforce while the latter would own the means of production. This would be characteristic of capitalist society, being a determining factor of social difference, especially with regard to the possibility of access to the results of capitalist production (goods in general), a fact that would contribute to increase social inequality.
However, when we talk about social class to think about this particular type of prejudice, we should not only consider this sense seen in Marx, which presupposes the existence of a constant class struggle with antagonistic interests in capitalist society (which is still important ). Social class should be spoken in a broader sense, considering the various social groups in a socioeconomic classification, their position or status in the social structure, a fact that suggests the existence not only of two classes, but of so many others depending on aspects such as levels income, education, access to health care, among other factors.
In other words, we must think of the idea of social class prejudice beyond the bourgeois / proletarian key, considering the existence of more economically wealthy classes (millionaires, wealthy, upper middle class) and others with less resources (middle class, lower middle, poor, miserable), with income being the determining factor of their social position and, thus, of class prejudice.