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Which of the following statement find cases with no missing values?

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Which of the following statement find cases with no missing values? (a) complete <- subset(data.df,complete.cases(data.df) (b) complete <- sub(data.df,complete.cases(data.df) (c) complete <- subset(data.df,completeall.cases(data.df) (d) new <- old[n1:n2,n3:n4] I had been asked this question by my college professor while I was bunking the class. The origin of the question is Commands in portion Commands, Packages, Visualizing Data and Linear Regression of R Programming Select the correct answer from above options

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Right option is (a) complete <- subset(data.df,complete.cases(data.df) To explain: new <- old[n1:n2,n3:n4] select the n1 through n2 rows of variables n3 through n4.

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