Consider the situation shown in figure. Water \[\left( {{\mu }_{w}}=\frac{4}{3} \right)\] is filled in a breaker upto a height of 10 cm. A plane mirror fixed at a height of 5 cm from the surface of water. Distance of image from the mirror after reflection from it of an object O at the bottom of the beaker is

• A.            15 cm
• B.            12.5 cm
• C.            7.5 cm
• D.            10 cm