Which of the following represents the number of security controls included in the NIST SP $800-171$ standard?

$1.$

The NIST SP $800-171$ standard consists of $17$ security controls.

$2.$

The NIST SP $800-171$ standard consists of $145$ security controls.

$3.$

The NIST SP $800-171$ standard consists of $110$ security controls.

$4.$

The NIST SP $800-171$ standard consists of $153$ security controls.