A sonographer alters the size of the sector produced by an ultrasound system from 45 degrees to 90 degrees. At the same time, the ultrasound system automatically alters the line density. It is decreased from 4 lines/degree to 2 lines/degree. No other changes are made. Which of the following statements is true?
1) temporal resolution increases
2) axial resolution decreases
3) spatial resolution decreases
4) spatial resolution increases
5) temporal resolution decreases
