Carol and Amir Met When They Were Reporters for the Local

Carol and Amir met when they were reporters for the local newspaper.They later discovered that they had attended the same college and had many friends and acquaintances in common.The possibility that Carol and Amir might marry because they are similar to each other in many ways is known as

A) social exchange theory.
B) homogamy theory.
C) social role theory.
D) attachment theory.