2 days 4 days 1 day 2 days Act. 2 Act. 1 Act. 5 Act. 6 5 days 1 day 2 days Act. 7 Act. 3 Act. 4 You want to complete the project shown in above network diagram in 11 days (assume deterministic activity durations). Which of the following crashing strategy is best: Crash activity 7 by 1 day, costs $25,000. O Crash activity 4 by 1 day, costs $16,000. O Crash activity 2 by 1 day, costs $18,000. O Crash activity 6 by 1 day, costs $5,000