During april, a customer asks you to create an arrangement for an invalid friend who must stay at home for five more days. the invalid friend loves flowers, especially fragrant ones. the amount the customer is willing to spend on the arrangement for this dear friend is so high that you know you won't be limited in your choice of flowers. there are no limits given by the customer as to size or style, but the customer would like the arrangement to include blue-purple and yellow flowers to match the friend's décor. the customer would also like the arrangement to cheer the friend for at least the remaining five days that the friend has to stay at home. you begin planning the arrangement by making a list of form, filler, and line materials, keeping color and fragrance in mind. you check the seasonal availability and vase life of each item in your reference materials. which of the following could be used as line flowers for this arrangement? a. gladiolus in pink b. gypsophila c. freesia d. delphinium