The contents of the flag register after execution of the following program by $8085$ microprocessor will be
$\textbf{Program}$
$\textsf{SUB A}$
$\textsf{MVI B,(01)}_\textsf{H}$
$\textsf{DCR B}$
$\textsf{HLT}$
- $(54)_\textsf{H}$
- $(00)_\textsf{H}$
- $(01)_\textsf{H}$
- $(45)_\textsf{H}$