In agricultural futures and options market, a strengthening basis for a grain (e.g., corn, wheat) or an oilseed (e.g., soybeans) refers to: (i) an increase in the commodity's cash price relative to its futures price an increase in the futures price relative to the cash price (iii) an increase in the cash price above the nearest-dated option's strike price (iv) an increase in the futures price above the matching-maturity option's strike price (v) a small drop in the cash price at the same time as a big drop in the futures price (vi) a small drop in the cash price at the same time as a small increase in the futures price (vii) a simultaneous increase, of the same magnitude, in both cash and futures prices. (viii) a simultaneous decrease, of the same magnitude, in both cash and futures prices. (ix) none of the above. Pick all the answers that you think correct. If you choose (ix), please explain