Please comment on the specific risks (if any) that are caused by the following combination of tasks. a. A sales manager, who works on commission based on gross sales, approves credit and has the authority to write off uncollectible accounts. b. The warehouse clerk, who has custodial responsibility over inventory in the warehouse, updates the inventory subsidiary ledger and prepares an inventory summary for the general ledger department. c. The billing clerk bills customers and records sales in the sales journal d. The shop foreman approves and submits time cards to timekeeping and distributes paychecks to employees. e. The accounting clerk posts to individual account receivable subsidiary accounts and performs the reconciliation of the subsidiary ledger and the general ledger control account.