Which one of the following research findings includes a mediator?

A$.$

The effect of product quality on customer satisfaction is stronger for men than for women

B$.$

The effect of product quality on customer satisfaction is stronger for functional products than for hedonic products

C$.$

As brand awareness increases the influence of product quality on customer satisfaction increases

D$.$

As the company has more scandals $($bad company reputation$)$ influence of product quality on customer satisfaction decreases

E$.$

As product quality increases quality of life increases, which leads to increased customer satisfaction