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?

A、Bothprojectileshavethesameaccelerationwhileinflight.;
B、Thesecondprojectilehasthelowerspeedatmaximumaltitude.;
C、Bothprojectileshavethesamerange.;
D、Alloftheotherstatementsarefalse.