Which of the following pairs of instructions have a Read$-$After$-$Write data

dependency?

$[]$ movq $\%$rbx$,\%$rax

addq $$64,\%$rax

$[]$ movq $\%$rax, $\%$rbx

addq $$64,\%$rax

$[]$ movq $\%$rbx$,\%$rax

addq $\%$rax, $\%$rcx

$[]$ movq $\%$rax, $\%$rbx

addq $\%$rax, $\%$rcx