What would be the default permissions on files and directories created by a user with umask 027?

What would be the default permissions on files and directories created by a user with umask 027?

A.
Files will have 640 permissions and directories will have 750 permissions.

B.
Files will have 639 permissions and directories will have 750 permissions.

C.
Files and directories will have 000 permissions because 027 is not a valid umask.

D.
Files and directories will have default permissions as of the default umask because 027 is not a
valid umask.

E.
Files will have 666 permissions and directories will have 777 permissions because 027 is not a
valid umask.