Which of the following statements is true? a. the postganglionic neuron (sometimes called the ganglionic neuron), is the first motor neuron. its cell body is in an autonomic ganglion outside the cns. its axon, the postganglionic axon, extends to the motor neuron. b. the preganglionic neuron (sometimes called the ganglionic neuron), is the second motor neuron. its cell body is in an autonomic ganglion outside the cns. its axon, the postganglionic axon, extends to the effector organ. c. the postganglionic neuron (sometimes called the ganglionic neuron), is the second motor neuron. its cell body is in an autonomic ganglion outside the cns. its axon, the postganglionic axon, extends to the effector organ. d. the preganglionic neuron (sometimes called the ganglionic neuron), is the first motor neuron. its cell body is in an autonomic ganglion outside the cns. its axon, the postganglionic axon, extends to the effector organ.