Revise the following sentences to delete the awkward references:
a. The vice president in charge of sales and the production manager are responsible for the keys to 34A and 35A, respectively.
b. The keys to 34A and 35A are in executive hands, with the former belonging to the vice president in charge of sales and the latter belonging to the production manager.
c. The keys to 34A and 35A have been given to the production manager, with the aforementioned keys being gold embossed.
d. A laser printer and an inkjet printer were delivered to John and Megan, respectively.
e. The walnut desk is more expensive than the oak desk, the former costing $300 more than the latter.