Tessy, a senior accountant at a private bank in Massachusett…

Tessy, a senior accountant at a private bank in Massachusetts, retired at the age of 62. Upon retirement, she received a benefit amount from the bank. This benefit amount equaled the total sum of money she had added to her pension plan each year plus the amount that the bank added to it every year. In this scenario, the sum of money that Tessy received post retirement comes from the _____.