In the H NMR spectrum of 2a, how many signals do you expect to appear in the range 3-4 ppm, and how many signals in the range 5-6 ppm? O Four signals in the 3-4 ppm range, and three signals in the 5-6 ppm range. O Four signals in the 3-4 ppm range, and four signals in the 5-6 ppm range. O Five signals in the 3-4 ppm range, and four signals in the 5-6 ppm range. O Three signals in the 3-4 ppm range, and four signals in the 5-6 ppm range. O Four signals in the 3-4 ppm range, and five signals in the 5-6 ppm range.