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___________ provides optional labels with the columns and rows.

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___________ provides optional labels with the columns and rows. (a) Disnames (b) Dimnames (c) Denmes (d) Demnesd This question was addressed to me during an online interview. I'd like to ask this question from Data Types topic in chapter Nuts and Bolts and Getting Data In and Out of R Programming Select the correct answer from above options

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Right answer is (b) Dimnames The explanation is: byrow=TRUE indicates that the matrix should be filled by rows. byrow=FALSE indicates that the matrix should be filled by columns (the default). dimnames provides optional labels with the columns and rows.

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