Answer saved Marked out of $1\mathrm{.}00$

Given that $BL$ contains $\text{'}{B}^{\text{'}}$ the effect of the following code OR BL$,00100000$ ADD BL$,2$

Is to:

a$.$ store $\text{'}d\text{'}$ in $BL$

b$.$ None of these

c$.$ store $\text{'}b\text{'}$ in $BL$

d$.$ store $01100001$ in BL

e$.$ clear BL