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Which of the following code will drop the nth column?

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Which of the following code will drop the nth column? (a) new <- old[-n,] (b) new <- old[,-n] (c) new <- old[,-c(i,j)] (d) new <- subset(old,logical) I got this question in an online interview. The origin of the question is Commands topic in portion Commands, Packages, Visualizing Data and Linear Regression of R Programming Select the correct answer from above options

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The correct answer is (a) new <- old[-n,] Explanation: new <- old[-n,] drops the nth row.

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