What does the following code print to the monitor?

int A $=42$;

int B $=29$;

int C $=64$;

printf $("$A: $\%$d$\backslash$

B: $\%$d

C: $\%$X$",$ B$,$ A$,$ C$)$;

$($a$)$

A: $29$

B: $42$

C: $40$

$($b$)$

A: $42\backslash$

B: $29$

C: $40$

$($c$)$

A: $42\backslash$

B: $29$

C: $40$

$($d$)$

A: $42$

B: $29$

C: $40$