A small software development project has five major activities. The times are estimated and provided in the table below.

Activity

Immediate

Predecessor

a

m

b

A

$--$

$2$

$5$

$8$

B

$--$

$10$

$10$

$10$

C

A

$4$

$7$

$10$

D

B

$2$

$5$

$14$

E

C

$3$

$3$

$3$

What is the expected completion time for this project?

$14$

$10$

$12$

$16$