Select the correct line of HTML that would activate the phone app of a mobile device.
a href=’tel:+16178675309′ target=’_blank’
a href=“tel:617-867-5309” target=”_blank”
a href=“call:6178675309” target=”_blank”
a href=“call:+1-617-867-5309” target=”_blank”
https://www.youtube.com/watch?v=mmWYRblITvo