A possible reason to use single sourcing is that the supplier may be more cooperative if it has all of the buyer's business. O True False Large suppliers: O are most suited for small dollar value "C" requirements. Usually represent very high risk to the purchaser. tend to have a strong financial base. usually provide the greatest responsiveness and flexibility. A supplier's references: may be useful if they are of similar size and objectives as the buyer's organization. are never completely trustworthy and therefore of little use. should always be in the same industry s the buying organization. O are useful only to confirm factual information