A security analyst is configuring a large number of new company$-$issued laptops. The analyst received the following requirements:

$$ The devices will be used internationally by staff who travel extensively.

$$ Occasional personal use is acceptable due to the travel requirements.

$$ Users must be able to install and configure sanctioned programs and productivity suites.

$$ The devices must be encrypted.

$$ The devices must be capable of operating in low$-$bandwidth environments.

Which of the following would provide the GREATEST benefit to the security posture of the devices?

A$.$ Configuring an always$-$on VPN

B$.$ Implementing application whitelisting

C$.$ Requiring web traffic to pass through the on$-$premises content filter

D$.$ Setting the antivirus DAT update schedule to weekly