Question: What company is the retailer where Bush products are sold exclusively a subsidiary of?

Context paragraphs:
Jennifer Lopez Collection: The Jennifer Lopez Collection is an American lifestyle brand created by American entertainer Jennifer Lopez that is sold exclusively at Kohl's department stores and at Kohls.com in the U.S.  In Mexico it is sold at department store Coppel.  In November 2010, Kohl's announced a partnership with Lopez and her then-husband Marc Anthony.  Originally marketed as "the first celebrity couple to simultaneously design collections for one retailer", following Lopez and Anthony's divorce, the lines were marked as two separate brands.  The Jennifer Lopez Collection includes contemporary sportswear, dresses, handbags, jewelry, shoes and sleepwear along with a home collection of bedding and towels, while the Marc Anthony Collection consists of sportswear, dress shirts, neckwear, accessories, suit separates, sport coats and shoes.  The collection "has been a best seller for the retailer since debuting in 2011."

Bush (brand): Bush is a British consumer electronics brand owned by Sainsbury's, and is one of the most famous names on early British radios.  Its sister brand is Alba.  Today, all Bush and Alba products are sold exclusively at Argos.

Alba (brand): Alba is a British consumer electronics brand owned by Home Retail Group.  Its sister brand is Bush.  Today, all Alba products are sold exclusively at Argos.

Picard Surgelés: Picard Surgelés is a French food company specialized in the manufacture and distribution of frozen products.  These products are sold exclusively with the Picard brand.  Early 2015 Picard Surgelés had almost 900 stores worldwide and sold about 700 different products.

Argos (retailer): Argos is a British catalogue retailer operating in the United Kingdom and Ireland, and a subsidiary of Sainsbury's.  The company trades both through physical stores and online, with over 845 retail stores, 29 million yearly store customers, and nearly a billion online vistors per annum, makes it one of the largest high street retailers in the United Kingdom.

White Fox Boutique: White Fox Boutique is an Australian online fashion retailer aimed for young adults.  Founded in 2013, White Fox Boutique sells various brands as well as White Fox The Label and Fox Swim which is sold exclusively on the White Fox Boutique website.  To an international customer audience they offer womenswear, footwear, swimwear, accessories and beauty products.

Blues to the Bush: Blues to the Bush is a live album by The Who recorded at the House of Blues in Chicago on 12 and 13 November 1999, and at the Empire Theatre, Shepherd's Bush on 22 and 23 December 1999.  It was sold exclusively from the now defunct MusicMaker.com, though it can still be found on torrent sites and second hand markets such as EBay.

EMac: The eMac, short for education Mac, is a 2002 Macintosh desktop computer made by Apple Inc. It was originally aimed at the education market, but was later made available as a cheaper mass market alternative to Apple's second-generation LCD iMac G4.  The eMac was pulled from retail on October 12, 2005 and was sold exclusively to educational institutions thereafter.  It was discontinued by Apple on July 5, 2006 and replaced by a cheaper, low-end iMac that, like the eMac, was originally sold exclusively to educational institutions.

Embassy Records: Embassy Records was a UK budget record label that produced cover versions of current hit songs that were sold exclusively in Woolworths shops at a lower price than the original recordings.  Embassy can therefore be seen as the UK equivalent of U.S. labels such as Hit and (in its early days) Bell Records.  The label was the result of a contractual arrangement between Oriole Records and Woolworths, with Embassy's product being sold exclusively through the latter's stores from 1954 to 1965.  The label disappeared after the parent company, Oriole, was taken over by CBS Records.  Later, from 1970 through to 1980, CBS Records revived the Embassy imprint to release budget versions of albums in the UK and Europe by artists that were signed to its parent company, Columbia Records.

Overstock.com: Overstock.com, Inc. is an American internet retailer headquartered in Midvale, Utah, near Salt Lake City.  Patrick M. Byrne founded the company in 1997 and launched the company in May 1999.  Overstock.com initially sold exclusively surplus and returned merchandise on an online e-commerce marketplace, liquidating the inventories of at least 18 failed dot-com companies at below-wholesale prices.  The company continues to sell home decor, furniture, bedding, and many other goods that are closeout merchandise, however, it also sells new merchandise.

Supporting paragraphs: Bush (brand) Argos (retailer)
Answer: Sainsbury's