How does one obtain an IPAWS Training and Demonstration digital certificate?

A$.$ By accessing the IPAWS Test$/$Demo Environment and testing

B$.$ By traveling to the IPAWS TSSF and completing the Federal Emergency Management Agency $($FEMA$)$ hands$-$on training course

C$.$ By completing the Federal Emergency Management Agency $($FEMA$)$ online training course $($IS$-247)$

D$.$ By completing the Federal Emergency Management Agency $($FEMA$)$ online training course $($IS$-251)$ and checking connectivity to the IPAWS Test$/$Demo Environment