a) Convey the object code in, or embodied in, a physical
product (including a physical distribution medium),
accompanied by the Corresponding Source fixed on a
durable physical medium customarily used for software
interchange.
b) Convey the object code in, or embodied in, a physical
product (including a physical distribution medium),
accompanied by a written offer, valid for at least three
years and valid for as long as you offer spare parts or
customer support for that product model, to give anyone
who possesses the object code either (1) a copy of the
Corresponding Source for all the software in the product
that is covered by this License, on a durable physical
medium customarily used for software interchange, for
a price no more than your reasonable cost of physically
performing this conveying of source, or (2) access to copy
the Corresponding Source from a network server at no
charge.
c) Convey individual copies of the object code with a
copy of the written offer to provide the Corresponding
Source. This alternative is allowed only occasionally and
noncommercially, and only if you received the object code
with such an offer, in accord with subsection 6b.
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