PLT149 ATPWHEN TAXIING ON AN AIRPORT WITH ASDE-X, YOU SHOULDA) OP...

136. PLT149 ATP

When taxiing on an airport with ASDE-X, you should

A) operate the transponder only when the airport is under IFR or at night during your taxi.

B) operate the transponder with altitude reporting all of the time during taxiing.

C) be ready to activate the transponder upon ATC request while taxing.