I want to know _____. [ ]

A. what is his name

B. what's his name

C. that his name is

D. what his name is

完全浸没在水中的乒乓球，放手后从运动到静止的过程中，其浮力大小变化情况是（）。

A．浮力不断地增大，直到到达水面静止之后，与重力相等

B．浮力在水面之下不会改变，而且大于重力，露出水面静止后浮力小于重力

C．浮力先不变，后变小，且始终大于重力，直到静止时，浮力等于重力

D．浮力先变大，然后保持不变，且大于重力，到静止时，浮力等于重力