The Rational team is at their last 5 weeks of the entire development period of 18 months i.e. 72 weeks. The RAD team would need 6 weeks of time to go thru the iterative software development cycle where 4 weeks are allotted to planning, design, and implementation and the final 2 weeks are for the testing phase. How would you determine where to cut a week off the schedule to get it down to 5 weeks? support the answer with relevant quotes from IBM case