Receipt, Inc., makes software, which is packaged with a shrink-wrap agreement. Evenflo Products distributes the software to retailers, including a flat price discount store, where Greta buys a package of it. The parties to the shrink-wrap agreement are

a. Greta and Receipt, Inc.

b. Evenflo Products and Receipt, Inc.

c. Evenflo Products, Receipt, Inc., and Greta.

d. Greta and Evenflo Products.