Two projectiles are launched at 100 m/s, the angle of elevation for the first being 30° and for the second 60°. Which of the following statements is false? (Ignore air resistance.)
选项：

A:Both projectiles have the same acceleration while in flight.;
B:The second projectile has the lower speed at maximum altitude.;
C:Both projectiles have the same range.;
D:All of the other statements are false.