rose is in charge of advertising a new product launched by her company. she has defined the advertising for this product as an individual project that consists of seven activities. following are the characteristics of these activities: activity immediate predecessor(s) activity time (in weeks) a none 2 b none 2 c a 4 d b 5 e c 5 f d 2 g e, f 2 calculate the earliest completion time for the project using a gantt chart. a. 10 weeks b. 11 weeks c. 12 weeks d. 13 weeks