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What will be the class of the vector if you concatenate a number and NA?

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What will be the class of the vector if you concatenate a number and NA? (a) Number (b) Character (c) Integer (d) No class This question was posed to me in quiz. Asked question is from Functions in portion Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming Select the correct answer from above options

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The correct choice is (a) Number Best explanation: The class of the resulting vector if you concatenate a number and NA is a Number. Decimal values are also called numeric in R. It is the default computational data type in R language.

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