Write the following list of characters into a correctly formed sentence: ThecoreofRCAwasMarconiWirelessofAmerica,theAmericansubsidiaryofMarconi'sBritishcompany,whichGEpurchasedfor$3.5million.
The core of RCA was Marconi Wireless of America, the American subsidiary of Marconi's British company, which GE purchased for $3.5 million.