A large temple has a depression in one wall. On the floor plan, it appears as an indentation having a spherical shape of radius $\text{2}\text{.50 m}$ . A worshiper stands on the centerline of the depression, $\text{2}\text{.00 m}$ out from its deepest point, and whispers a prayer. Where is the sound concentrated after reflection from the black wall of the depression?

• Correct answer
  A

  $\frac{-10}{3}\text{m}$
• B

  $\frac{-10}{7}\text{m}$
• C

  $\frac{-3}{10}\text{m}$
• D

  $\frac{-7}{10}\text{m}$

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