In Each Blank Below Place a P or an S

Short Answer

In each blank below place a P or an S to indicate whether the associated activity is performance oriented (P)or simulation oriented (S).
____ Writing a program that applies a particular economic theory to see if that theory leads to realistic consequences.
____ Writing a program to allow a database system to receive requests verbally.
____ Writing a program to control an automated aircraft landing system.
____ Writing a program to handle a university's registration system.