Which of the following is an element of technology that now…

Which of the following is an element of technology that now is an integral part of open outcry trading at U.S. futures exchanges (for contracts for which open outcry still is used)? More than one answer may be correct. For full credit, you must correctly identify all of the correct answers.

Selina takes a short position in 20 CBOT July corn futures c…

Selina takes a short position in 20 CBOT July corn futures contracts at a futures price of 375¢/bu. What has she agreed to do under the terms of this contract (assuming that she holds her position open through July)? The underlying asset for this contract is 5,000 bu.