Detailed Answer
(a) FASB ASC 958 states
Gifts of long-lived assets received without stipulations about how
long the donated asset must be used shall be reported as restricted
support if it is an organization’s accounting policy to imply a time
restriction that expires over the useful life of the donated assets…In
the absence of that policy and other donor-imposed restrictions on
use of the asset, gifts of long-lived assets shall be reported as
unrestricted support.