Which of the following is the correct definition for incremental development life cycle? a. Deliverable is produced through a series of iterations within a predetermined time frame. Product is only complete after the final iteration. The detailed scope is defined and approved before the start of each iteration. b. The detailed scope is defined and approved before the start of each iteration. c. Deliverable is produced through a series of iterations within a predetermined time frame. Product is only complete after the final iteration. d. Deliverable is produced through a series of iterations within predetermined time frame. Product is complete after each iteration. e. Project scope is generally determined early in the life cycle, but time and cost estimate are routinely modified as the project team's understanding of the project increases