The _______________ is a security app by Microsoft which is a built-in one into Windows OS that is designed to filter network data from your Windows system & block harmful communications or the programs which are initiating them.

The _______________ is a security app by Microsoft which is a built-in

1.	The _______________ is a security app by Microsoft which is a built-in one into Windows OS that is designed to filter network data from your Windows system & block harmful communications or the programs which are initiating them.
A.	Windows Security Essentials
B.	Windows Firewall
C.	Windows app blocker
D.	Windows 10
Answer» C. Windows app blocker