Find the earliest completion times for order‑requirement digraphs (a) and (b).
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Find the critical path for digraph (a).
A. T2T5T7
B. T2T4T5T7
C. T1T3T5T7
D. T3T5T7
E. T1T4T7
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Find the critical path for digraph (b).
A. T3T5T7
B. T2T4T5T7
C. T2T5T7
D. T1T3T5T7
E. T1T3T5T8
F. T1T4T7
