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Vinca alkaloids exert antitumor activity by: A. Activating topoisomerase II to cause breaks in DNA strands B. Crosslinking DNA strands C. Inhibiting DNA mediated RNA synthesis D. Inhibiting polymerization of tubulin to form intracellular microtubules

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Vinca alkaloids exert antitumor activity by:
A. Activating topoisomerase II to cause breaks
in DNA strands
B. Crosslinking DNA strands
C. Inhibiting DNA mediated RNA synthesis
D. Inhibiting polymerization of tubulin to form
intracellular microtubules
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D. Inhibiting polymerization of tubulin to form
intracellular microtubules
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