How Did Thomas Malthus's Ideas, About Human Population, Affect Darwin's

How did Thomas Malthus's ideas, about human population, affect Darwin's ideas on natural selection?

A) Darwin decided that if human population increased with each successive generation, all animals and . plants must reproduce using the same principles.
B) Darwin abandoned his idea of natural selection because Malthus' work proved that populations . would continually double in number with each generation.
C) Thomas Malthus believed that human populations declined when temperature drops, therefore . Darwin concluded that all plant species will not reproduce in cold temperatures.
D) Mallthus believed that only a fraction of any population will survive and reproduce, Darwin . contradicted Malthus's theories and said that all species will continue to survive and reproduce indefinitely.
E) Malthus theorized that only a fraction of any human population will survive and reproduce. Darwin's . observations during his voyage on the Beagle, supported Malthus' theory.