Option A: By directly stating the psychological or emotional state of the character, we make it sound dull. We must use actions and instances to bring out how the character thinks or feels, or use imagery to display the same. Hence, it's a common mistake that writers make in portraying the character. So, option A is correct.
Option B: It's not 'misleading' because the character's psychological and emotional state is true.
Option C: The description is appropriate in itself, but 'explicitly' stating it degrades the quality of the writing.
Option D: The decision cannot be 'wise', as the writing turns out dull and lifeless.
Hence options B, C and D are wrong.