Which of the following scenarios is an example of deep$-$level diversity?

Multiple Choice

Darrin's team is composed of five men and three women ranging in age from $23$ to $60$ and hailing from each of the five regional sales districts.

Tina composed a team whose members came from several diverse countries because she wanted any customer to be able to find a salesperson they were comfortable with.

Stu's committee of four men and five women are assigned to organize the annual company picnic, and the women are doing the majority of the work.

Brian formed a diversity team and made sure to include a balance of genders, a range of ages, and at least one member of each ethnic group represented within the company.