To simulate a matrix in JavaScript using a multidimensional array, _____.   a. use the syntax array[x][y], where x is the number of rows and y is the number of columns in the matrix   b. create an array whose elements are nested arrays, each of which contains the data for a row in the matrix   c. create an array for each column in the matrix and then define an array whose elements are the variables to which you assigned the column arrays   d. use the constructor to build a new Matrix object

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