A. href="https://www.w3school.com/lib/.css"
B. href="http://www.w3schools.com/lib/w3.css"
C. hrefs="http"//www.w3school.com/ ...lib/w3.css"
D. href="https://www.w3schools.com/ ...lib/w3.css"
Correct Answer is :
B. href="http://www.w3schools.com/lib/w3.css"