Aeolus Helios Electrical $($Pty$)$ Ltd places an order for Silver Oxide batteries with Silverstream Batteries in the USA who quote in dollars subject to the spot price of silver but payable in South African rand.$$

a$)$ Which type of contract should AHE enter into with SIlverstreams? $(2)$

b$)$ After the contract had been awarded, one of the unsuccessful bidders submitted a claim for the cost of bid preparation. What should Aeolus Helios Electrical $($Pty$)$ Ltd do$?(1)$