Carla and Ben have been married for 50 years. During that time, Carla stayed home raising their children and maintaining their household while Ben worked for an engineering firm. When they reach retirement age, together Ben and Carla are eligible to receive _______.a. 150% of Ben's Social Security benefits.
b. half of Ben's Social Security benefits.
c. only Ben's Social Security benefits.
d. 200% of Ben's Social Security benefits.