Since 1950, the Volume of World Trade and the Volume

Multiple Choice

Since 1950, the volume of world trade and the volume of world real GDP

A) have both increased at roughly the same rate.
B) have both decreased at roughly the same rate.
C) have both increased, but the volume of world trade has increased more slowly than the volume of world real GDP.
D) have both increased, but the volume of world trade has increased faster than the volume of world real GDP.