Question: Fix each of the following common data frame subsetting errors in R: a. mtcars[mtcars$cyl = 4, ] b. mtcars[-1:4, ] c. mtcars[mtcars$cyl

Fix each of the following common data frame subsetting errors in R:

a. mtcars[mtcars$cyl = 4, ]

b. mtcars[-1:4, ]

c. mtcars[mtcars$cyl <= 5]

d. mtcars[mtcars$cyl == 4 | 6, ] (no error but incorrect result)

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