Help please :

Suppose that frame is a data.frame. Provide code that ... a) Will assign to frame1 the same data.frame, but without the third column. b) Will assign to frame2 the same data.frame, but keeping only the first five rows. c) Will assign to frame3 the same data.frame, but keeping only the rows where the second column's value is less than 100 (you may assume that the second column only has numeric data in it and is named values, although you don't actually need this information).