For a given matrix mat, how do you increment every element of the matrix by 3 and return a vector. (I) sapply(mat, function(x,y) sum(x)+y,y=3) (II) sapply(mat, function(x) sum(x)+3)

Question

Q:

For a given matrix mat, how do you increment every element of the matrix by 3 and return a vector. (I) sapply(mat, function(x,y) sum(x)+y,y=3) (II) sapply(mat, function(x) sum(x)+3)

Answer 1

answer is I & II