For the following project, what is the expected duration for Activity B$?$

ACTIVITY

A

B

C

D

E

F

G

H

a

$3$

DAYS

m

$6$

$8$

$6$

$2$

IMMEDIATE

PREDECESSORS

$1$

$7$

$7$

$6$

$3$

w

$9$

$8$

$4$

$5$

b

$6$

$11$

$10$

$6$

$15$

$14$

$10$

$8$

$7$

A

A

B$,$ C

D

D

D

F$.$ G

E$,$ F$.$ H

$$ a$.$

$48/6$

$$ b$.$

$15/6$

$$ C$.$

$33/6$

$$ d$.39/6$