Identify the hydride which is not correctly matched with the example given in brackets?

• A

  Saline hydride - $(\mathrm{NaH})$
• B

  Electron rich hydride - $\left(\mathrm{H}_2 \mathrm{O}\right)$
• C

  Electron deficient hydride - $\left(\mathrm{B}_2 \mathrm{H}_6\right)$
• Correct answer
  D

  Electron precise hydride - (HF)

Hence, the correct answer is option: 'D'.