Hard Times Mining Cooperative of West Virginia has agreed in writing with the Peabody Coal Company to sell its entire production for the next three

Hard Times Mining Cooperative of West Virginia has agreed in writing with the Peabody Coal Company to sell its entire production for the next three years, with the price to be indexed to coal production standards in the vicinity. Under these facts and the UCC : 

options:

1)   Price terms are not definite enough; therefore, no contract is formed.

2)   Valid output contract is formed.

3)   Quantity is not certain; therefore no contract.

4)   Valid requirements contract if formed.