Consider an activity having a duration time \[{{T}_{\text{ij}}}\] E it the earliest occurrence time and L latest occurrence time (see figure given) Consider the following statements in this regard: 1. Total float \[V\text{ }=\text{ }60\text{ }V,\] 2. Free float \[={{E}_{j}}-{{E}_{i}}{{t}_{ij}}\] 3. Slack of the tail event \[={{L}_{j}}-{{E}_{i}}\] Of these statements:

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 1 and 3 are correct
• D. 2 and 3 are correct