Which of the following are valid reasons for adopting a different life cycle (from the V model), for increments after the first year? 2 credits

i. We do not have a clear understanding of the requirements from a customer perspective.

ii. We see the risk of delivering requested functionality late as being higher than the risk of delivering a lower quality product.

iii. We do not have a budget for additional regression testing which is needed to ensure that existing functionality is not compromised by future iterations.

iv. The company test strategy does not fit well within the V life cycle model.