Which of the following is an example of corporate social responsibility $($CSR$)?$ choose an answer from below

A$.$ Brenner Enterprises gives its employees greater freedom in choosing projects.

B$.$ Dawson Inc. uses a clean$-$fuel technology shuttle for employee conveyance.

C$.$ Larsen Inc. provides free lunch coupons to its employees.

D$.$ Infinite Corp. promotes team building activities for employees.