50. Which of the following is true about short-term and long-term memory processes? (A) Both short-term and long-term memory processes require protein synthesis. (B) Neither short-term nor long-term memory processes require protein synthesis. (C) Invertebrate animals like Aplysia and Drosophila do not show long-term memory processes. (D) Short-term memory processes act through second messenger systems while long-term memory processes require protein synthesis. (E) Long-term memory processes act through second messenger systems while short-term memory processes require protein synthesis. .