Which command can the web developer run to see what the module is doing during the latency period?

A developer has a web server running with Node.js. The command to start the web server is node server.js. The web server started having latency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.

Which command can the web developer run to see what the module is doing during the latency period?
A . NODE_DEBUG=true node server.js
B . DEBUG=http, https node server.js
C . NODE_DEBUG=http,https node server.js
D . DEBUG=true node server.js

Answer: D