Throw an Object Upward at a 45 Degree Angle

Multiple Choice

Throw an object upward at a 45 degree angle.With no gravity it will follow a straight-line path.But because of gravity,at the end of 1 second,it is

A) about 5 m below the straight line.
B) about 10 m below the straight line.
C) about 15 m below the straight line.