When Keith Nixon, a Salesperson for Paradise Water Gardens, Calls

When Keith Nixon, a salesperson for Paradise Water Gardens, calls on Olin Wiley, the owner of Lexington Nurseries, he often helps Wiley plan newspaper ads to take full advantage of the co-op advertising allowance that Lexington earns from Paradise. In this example, Nixon is maximizing his sales opportunity with Lexington by:

A) cross-selling.
B) helping service the product.
C) providing expert guidance.
D) following through with action.
E) generating repeat orders.