400.2-606.  What constitutes acceptance of goods. — (1)  Acceptance of goods occurs when the buyer

  (a)  after a reasonable opportunity to inspect the goods signifies to the seller that the goods are conforming or that he will take or retain them in spite of their nonconformity; or

  (b)  fails to make an effective rejection (subsection (1) of section 400.2-602), but such acceptance does not occur until the buyer has had a reasonable opportunity to inspect them; or

  (c)  does any act inconsistent with the seller's ownership; but if such act is wrongful as against the seller it is an acceptance only if ratified by him.

  (2)  Acceptance of a part of any commercial unit is acceptance of that entire unit.