Refer to Examples 9.17 and 9.20 and let P be Program P9.6. Let e denote some error in P that is corrected to create P . Assume that correction of e requires a change to one of the existing statements,...

Refer to Examples 9.17 and 9.20 and let P be Program P9.6. Let e denote some error in P that is corrected to create P . Assume that correction of e requires a change to one of the existing statements, or the addition/deletion of a statement. You may also change the specification so that P becomes erroneous. Now suppose that P is executed against test t and e is not detected. Construct an e that will go undetected if (a) DS(t, z, 11) and (b) RS(t, z, 11) are used for test selection.