${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}is\text{a}\text{m}\text{e}\text{a}\text{s}\text{u}\text{r}\text{e}of\text{r}\text{e}\text{v}\text{e}\text{n}\text{u}\text{e}\text{g}\text{e}\text{n}\text{e}\text{r}\text{a}\text{t}\text{e}\text{d}on\text{a}\text{p}\text{e}\text{r}\text{c}\text{u}\text{s}\text{t}\text{o}\text{m}\text{e}\text{r}\text{b}\text{a}\text{s}\text{i}\text{s}\text{.}}$

Question $6$ options:

Relative market share

Market share

Average revenue per customer

Wallet share