The o value for a p-NH2 substituent is -0.57, while that for a p-NH3+ substituent is 0.60. Which of the following statements are true? A B Op(NH3+) > Op(NH2) because a p-NH3+ substituent is a stronger electron- withdrawing group than a p-NH2 substituent a p-NH3* can withdraw electron density through both inductive and mesomeric effects a p-NH2 substituent can donate electron density through both inductive and mesomeric effects a p-NH3can donate electron density through both inductive and mesomeric effects a p-NH2 substituent can withdraw electron density inductively and donate electron density mesomerically D E Options: (a) A and B (b) B and E (c) A, B and C (d) B only (e) A and E (1 mark)