Which description of the transformation of z on the complex plane gives the product of and 2 = startroot 8 endroot (cosine (startfraction pi over 4 endfraction) + i sine (startfraction pi over 4 endfraction) )? scale z by a factor of 4, then rotate counterclockwise startfraction pi over 2 endfraction radians scale z by a factor of startroot 8 endroot, then rotate counterclockwise startfraction pi over 2 endfraction radians scale z by a factor of startroot 8 endroot, and then rotate counterclockwise startfraction pi over 4 endfraction radians scale z by a factor of 4, then rotate counterclockwise startfraction pi over 4 endfraction radians