From a 10 m high building a stone ‘A’ is dropped, and simultaneously another identical stone ‘B’ is thrown horizontally with an initial speed of 5 $m{s}^{-1}$. Which one of the following statement is true?

‘A’ stone reaches the ground earlier than ‘B’

It is not possible to calculate which one of the two stones will reach the ground first

‘B’ stone reaches the ground earlier than ‘A’

Both the stones (A and B) will reach the ground simultaneously