Military Taxpayers $($LO $6\mathrm{.}9)$

Which of the following forms of compensation to an active member of the U$.$S$.$ Armed Forces is likely to be excluded from gross income?

a$.$ Basic allowance for housing $($BAH$)$

b$.$ Active duty pay

c$.$ Training duty pay

d$.$ Reserve training pay

e$.$ None of these choices are excluded.