A contract's volume on a given day was 500. If this contract trades in accordance with the concept of (pure) normal backwardation, then what positions would definitely not occur on that day?

a. A hedger who goes long 0 contracts, a speculator who goes long 500 contracts

b. A hedger who goes short 500 contracts, a speculator who goes long 500 contracts

c. A hedger who goes long 0 contracts, a hedger who goes short 500 contracts

d. A speculator who goes long 500 contracts, a speculator who goes short 0 contracts.

e. A hedger who goes long 500 contracts, a speculator who goes short 500 contracts