Question: Which of the following is a home computer designed by Radofin and released in 1983: Mattel Aquarius or Tandy 1000?

Context paragraphs:
Tandy 1000: The Tandy 1000 was the first in a line of more-or-less IBM PC compatible home computer systems produced by the Tandy Corporation for sale in its RadioShack chain of stores.

Mattel Aquarius: Aquarius is a home computer designed by Radofin and released by Mattel in 1983.  It features a Zilog Z80 microprocessor, a rubber chiclet keyboard, 4K of RAM, and a subset of Microsoft BASIC in ROM.  It connects to a television set for audio and visual output, and uses a cassette tape recorder for secondary data storage.  A limited number of peripherals, such as a 40-column thermal printer, a 4-color printer/plotter, and a 300 baud modem, were released for the unit.

Triton disk drive: The Triton Quick Disk Drive is a product that allows 2.8-inch floppy disks to be read on the Commodore 64, ZX Spectrum, MSX, Mattel Aquarius and Dragon 64 home computers.  The product was released for sale in the mid-1980s.

Tron: Deadly Discs: Tron: Deadly Discs is a video game for Mattel's Intellivision console, and was published by Mattel in 1982.  The initial game design was done by Don Daglow, with further design and programming by Steven Sents.  It is the first of three Intellivision games based on the Disney motion picture "Tron".  Adaptations of this game have been developed and released for the Atari 2600, under the M Network banner, and the Mattel Aquarius.

Utopia (video game): Utopia is a 1981 strategy video game by Don Daglow released for the Intellivision and Mattel Aquarius.  It is often regarded as among the first city building games and god games.  It is also credited with having laid the foundations for the real-time strategy genre.  In July 2010, the game was re-released on Microsoft's "Game Room" service for its Xbox 360 console and for Games for Windows Live.

Entertainment Computer System: The Entertainment Computer System was an add-on peripheral for the Intellivision.  It was Mattel Electronics' second attempt at creating a peripheral to upgrade the Intellivision into a home computer, rushed into production to appease the Federal Trade Commission after they began fining Mattel for false advertising following consumer complaints about the repeated delays in releasing the originally planned Intellivision Keyboard Component add-on.  The Entertainment Computer System or ECS includes the Computer Module, Music Synthesizer, and additional hand controllers; each sold separately.  Any Intellivision Master Component is compatible and a requirement to use the system.

Interact Home Computer: The Interact Home Computer is a rare, very early (1978) American home computer made by "Interact Electronics Inc" of Ann Arbor, Michigan.  It sold under the name "interact Model One home computer".  The original Ineract Model One computer was designed by Rick Barnich and Tim Anderson at 204 E. Washington in Ann Arbor, then moving to an office in Georgetown Mall on Packard St in Ann Arbor.  Interact Electronics Inc was a privately held company that was funded by Hongiman, Miller, Swartz and Cohn...a lawyer firm out of Detroit.  The President/Founder of Interact Electronics Inc was Ken Lochner, who was one of the original developers of the BASIC language based out of Dartmouth college.  Ken had started Interact Electronics Inc after a successful startup known as ADP Cyphernetics, the original computer time share company in Ann Arbor, now known as ADP Network Services.  Only a few thousand Interacts were sold before the company went bankrupt.  Most were sold by the liquidator "Protecto Enterprizes" of Barrington, Illinois through mail order sales.  The Interact Model One Home Computer debuted at the Consumer Electronics Show in Chicago in June 1978 at a price of $499.  The majority of sales were thru Mail Order houses and you could buy it off the shelf at Highland Appliance in the Detroit, MI area and Newman Computer Exchange in Ann Arbor.  Probably the most successful application available for the Interace was a program called "Message Center".  With it, a store could type in whatever message they wanted to appear scrolling on a TV screen...like Advertisements, or welcoming messages to guests in an office.  Although it was mostly a Game machine at the time with games such as Showdown, BlackJack and Chess, there was also BASIC programming where users could create their own programs in the BASIC computer language.  Customers began hooking up Interact to control everything from lights in their house, to a Chevrolet Corvette!

Radio-86RK: The Radio-86RK (Russian: Радио-86РК ) is a build-it-yourself home computer designed in Soviet Union.  It was featured in the popular "Radio" (Russian: Радио ) magazine for radio hams and electronics hobbyists in 1986.  The letters RK in the title stands for the words "Radio ham's Computer" (Russian: Радиолюбительский компьютер ).  Design of the computer was published in a series of articles describing its logical structure, electrical circuitry, drawings of printed circuit boards and firmware.  Computer could be built entirely out of standard off-the-shelf parts.  Later it was also available in a kit form as well as fully assembled form.

Dragon MSX: The Dragon MSX MSX 1 home computer was designed by Radofin (the creators of the Mattel Aquarius) for Dragon Data, which were well known for their Dragon 64 home computer, a clone of the TRS-80 Color Computer.

DeskMate: DeskMate was a software application that provided an operating environment that competed with early versions of Microsoft Windows.  It originally was made for Tandy's TRS-DOS Operating System and for their TRS-80 line of computers, but eventually shifted to PC, where it was developed using C and Assembly.  Like Windows (and other competitors from the time, such as GEM), it was not a full operating system, requiring a separate disk operating system in order to function.  Although the initial PC ports would only run on Tandy's PCs (such as the Tandy 1000), the introduction of the true PC-compatible computers such as the Tandy 3000 resulted in the software later being made available for other compatibles.

Supporting paragraphs: Mattel Aquarius Tandy 1000
Answer: Aquarius