As a telecom engineer, you have been asked to install a WLAN for an organization. You need to check the site and verify the areas of dead space and wireless signal coverage and strength to ensure that all areas on the premises get strong signals.

A.Which tool or method should be used to verify the dead space and wireless signal coverage and strength?

B.Channel overlays display areas where wireless networks have signal issues.

C.Channel width displays the essential details of the wireless network.

D.Heat maps display the wireless signal coverage and strength.

Channel selection displays areas with good wireless signal coverage.