Two balls are being dropped from different heights. Ball A takes twice the time ball B takes to reach the ground. Which of the following statements is correct?

a) The initial velocity of ball A is twice that of ball B.
b) The height from which ball A is dropped is four times the height from which ball B is dropped.
c) The acceleration of ball A is twice that of ball B.
d) The initial velocity of ball A is the same as that of ball B.