1. Construct the project network comprised of activities A to L with the following precedence relationships:

(a) A, B, and C, the first activities of the project, can be executed concurrently.

(b) A and B precede D.

(c) B precedes E, F, and H.

(d) F and C precede G.

(e) E and H precede I and J.

(I) C, D, F, and J precede K.

(g) K precedes L.

(h) I, G, and L are the terminal activities of the project.