单选题When should Solutions Assurance Reviews take place？（）A Pre-order， pre-installationB Post-order， pre-installationC Pre-order， post completion sign-offD Pre-installation， post completion sign-off
题目
单选题
When should Solutions Assurance Reviews take place？（）
A
Pre-order， pre-installation
B
Post-order， pre-installation
C
Pre-order， post completion sign-off
D
Pre-installation， post completion sign-off