Given the task definition and input, reply with output. In this task, you're given a statement and three sentences as choices. Your job is to determine which sentence can be inferred from the statement. Incorrect choices change the meaning in important ways or have details that are not mentioned in the statement. Indicate your answer as 1,2, or 3 corresponding to the choice number of the selected sentence.

Statement: In response, the Congress passed reforms in 1977 and 1983 that together were intended to assure Social Security's solvency for a 75-year period. Choices: 1. In 1976, Congress passed a bunch of reforms that would leave Social Security at the mercy of the current administration. 2. Congress felt that Social Security was necessary for the aging population. 3. In 1977 and 1983, Congress passed a series of reforms that were supposed to make sure that Social Security remained solvent for at least 75 years.
3