Write a section of code that does the following:

a) Make a 9 x 17 matrix, where each element is the number 47.

b) For all elements that are in an odd row and an even column, subtract 5.

c) For all elements that are in an even row and an odd column, add 12.

d) Add 1 to all numbers that appear in the first 6 columns that are also less than 50. You may have to do this in more than one step.