The most reliable way to measure advertising effectiveness is to A. Stop adverstising altogther B. USe Google data-driven attribution tool C. Use Linear attribution D. Conduct a carefully controlled experiementA lead geenration website recieved 1,000 visiters gained 80 leads and booked jobs with 20 of those leads. What is the conversion rate and what is the close rate A. 8%; 25% B. 85; 20% C. 20%; 25% D. 20%; 80%