A)

if ( x < 10 )

if ( y > 10 )

document.writeln( "*****<br/>" );

else

document.writeln( "#####<br/>" );

document.writeln( "$$$$$<br/>" );

B)

if ( x < 10 )

{

if ( y > 10 )

document.writeln( "*****<br/>" );

}

else

{

document.writeln( "#####<br/>" );

document.writeln( "$$$$$<br/>" );

}