Ccda Questions That I Don't Agree With P4s

At which stage in the PPDIOO process would you analyze a customer's network in order to discover opportunities for network imrovement?
P4S answer: Design
Mine: Plan: in step 2 you characterise the existing network

Which three types of WAN topologies can be deployed in the Cisco Enterprise Architecture Enterprise Edge WAN module?
P4S: star, full mesh, collapsed core
mine: star, full mesh, partial mesh

next step after design phase
p4s:Develop the implementation plan in as much detail as possilbe.
some people here have answered : Pilot & Prototype

Can anybody who had taken the exam tells us the right answers?
thanks