Section 3--303. Taking for Value. A holder takes the instrument for value

1. (a) to the extent that the agreed consideration has been performed or that he acquires a security interest in or a lien on the instrument otherwise than by legal process; or
2. (b) when he takes the instrument in payment of or as security for an antecedent claim against any person whether or not the claim is due; or
3. (c) when he gives a negotiable instrument for it or makes an irrevocable commitment to a third person.