Project mangmebt engineering ineed solution after $10$ min hlep me plllzz to rate and like for u Question $10$

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F Flag question

The project represented in the diagram below is supposed to start on $15$ June $2020.$ What is the free float $($in days$)$ of activity $B($suppose there are no vacations as the seven days of the week are supposed to be all working days$)?$

Select one:

a$.2$

b$.4$

c$.0$

d$.3$