uninstallA group exploit remove_all_A(a)=
	preconditions:
		quality:a,A_is_installed=true;
	postconditions:
		update quality:a,A_is_installed=false;
.

uninstallC group exploit remove_all_C(c)=
	preconditions:
		quality:c,C_is_installed=true;
	postconditions:
		update quality:c,C_is_installed=false;
.