Assume That the Average Mass of Each of the Approximately $x$

Multiple Choice

Assume that the average mass of each of the approximately 1 billion people in China is 55 kg.Assume that they all gather in one place and climb to the top of 2 m high ladders.The center of mass of the Earth (m_E = 5.90 $x$ 10²⁴ kg) is then displaced

A) 0 m.
B) 1.84*10^-23 m.
C) 1.84 *10^-14 m.
D) 1.80 *10^-13 m.
E) 2 m.