Aisha: Vadim is going to be laid off. Vadim' s work as a programmer has been exemplary since joining the firm. But management has already made the decision to lay off a programmer. And this firm strictly follows a policy of laying off the most recently hired programmer in such cases. Aisha's conclusion follows logically if which one of the following is assumed? ['Vadim is the most recently hired programmer at the firm.', 'Every other programmer at the firm has done better work than Vadim.', 'When Vadim was hired, the policy of laying off the most recently hired programmer was clearly explained.', 'The firm values experience in its programmers more highly than any other quality.']