B)?A

B)?A is an Esoteric programming language created by User:Buckets in 2020.

Commands	Instructions
AB	Option A and Option B Forwards with Conditions with the Start, ` And Using < for an "emergency exit".
CD	Option A and Option B Backwards with The conditions with the Start, ' And Using > for an "emergency exit".
E	Input.
F	Output.
GH	The same as AB but with " And Using . for an "emergency exit".
[]	"a condition".
{}	"an operation".
$	Swap Between the Two Variables.

Cat program:

CDEF'

Truth-machine Program:

E`[="1"]ACDF'[="0"]BF<

"Hello, World!" Program:

{="Hello, World!"}F

A+B Problem:

E$E{+$}$F

99 bottles of beer Program:

{="99"}CDF$
{=" bottles of beer on the wall, "}F$F
{=" bottles of beer.
Take one down and pass it around, "}
F${-1}F${=" bottles of beer on the wall."}F$
`[="1"]A
{="
1 bottle of beer on the wall, 1 bottle of beer.
Take one down and pass it around, no more bottles of beer on the wall.
No more bottles of beer on the wall, no more bottles of beer.
Go to the store and buy some more, 99 bottles of beer on the wall."}F"
B'GH