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Fill in the blanks with the correct combination of terms. Flowering plants have a well-developed transport system called\[\underline{\,\,\,\,a\,\,\,\,}\]. It is composed of pipe-like vessels called \[\underline{\,\,\,\,b\,\,\,\,}\]and\[\underline{\,\,\,\,c\,\,\,\,}\].

A) a: shoot system, b: xylem, c: phloem

B) a: vascular system, b: xylem, c: phloem

C) a: vascular system, b: sepals, c: petals

D) a: root system, b: stem, c: branches

E) None of these