Arrange the following phases of the classical waterfall software development lifecycle in chronological order from earliest to latest: Design, Feasibility study, Integration and system testing, Maintenance, Coding and unit testing, Requirements analysis and specification.

### Why this is right The sequence begins by examining feasibility, then clarifies and documents requirements. Design translates requirements into a structure for implementation, which is coded and unit tested before integration and system testing. Maintenance follows delivery. ### The order 1. **Feasibility study**: Examine the problem and possible solution strategies. 2. **Requirements analysis and specification**: Understand and document customer needs. 3. **Design**: Create a structure suitable for implementation. 4. **Coding and unit testing**: Implement and check individual units. 5. **Integration and system testing**: Combine modules and test the system. 6. **Maintenance**: Support and modify the delivered product. ### Terms - **Unit testing**: Testing an individual software unit. - **Integration testing**: Testing combined modules and their interactions. ### Remember Requirements precede design, and design precedes implementation.