Speed of sound in mercury at a certain temperature is 1450 m/s. Given the density of mercury as 13.6  $\times$ 10³ kg / m³, the bulk modulus for mercury is 

• A

  2.86 $\times$10¹⁰ N/m³ 

• B

  3.86 $\times$10¹⁰ N/m³

• C

  4.86 $\times$10¹⁰ N/m³

• D

  5.86 $\times$10¹⁰ N/m³