Given that BL contains $\text{'}B\text{'}$ the effect of the following code

OR BL$,00100000$

ADD BL$,2$

Is to:

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

b$.$ store $01100001$ in BL

c$.$ None of these

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

e$.$ clear BL