At 25^ CK _ a of HPO ₄ ²⁻ and HSO ₃ ⁻ are 4.8 10⁻¹³ and 6.3 10⁻⁸ respectively. Which of the following is correct?

Options

1. AHPO ₄ ²⁻ is a stronger acid than HSO ₃ ⁻ and PO ₄ ³⁻ is a weaker base than SO ₃ ²⁻
2. BHPO ₄ ²⁻ is a weaker acid than HSO ₃ ⁻ and PO ₄ ³⁻ is a weaker base than SO ₃ ²⁻
3. CHPO ₄ ²⁻ is a weaker acid than HSO ₃ ⁻ and PO ₄ ³⁻ is a stronger base than SO ₃ ²⁻
4. DHPO ₄ ²⁻ is a stronger acid than HSO ₃ ⁻ and PO ₄ ³⁻ is a stronger base than SO ₃ ²⁻