In what way does Google’s phone call conversion tracking feature track calls to an advertiser’s account?

• It tracks calls via the assigned Google Click Identifier (GCLID) set up in the advertiser’s account.
• It tracks calls via the conversion name for the advertiser’s
• It tracks calls via a dynamically created Google forwarding number.
• It tracks calls via the phone number listed on the advertiser’s official store website.

The correct answer is:

• It tracks calls via a dynamically created Google forwarding number.