help!

1. (20 points) Refer to this molecule for each of the questions below: (a) How many signals will be displayed in the molecule's 13C NMR spectrum? (A) 8 (C) 12 (B) 10 (D) 15 (b) How many signals will be displayed in its DEPT 45 NMR spectrum? (A) 7 (C) 10 (B) 8 (D) 12 (c) How many signals will be displayed in its DEPT 90 NMR spectrum? (A) 1 (C) 3 (B) 2 (D) 5 (d) How many positive signals will be displayed in its DEPT 135 NMR spectrum? (A) 5 (C) 10 (B) 8 (D) 13 (e) How many negative signals will be displayed in its DEPT 135 NMR spectrum? (A) 2 (C) 4 (B) 3 (D) 7