Answer:
Dame Agatha Mary Clarissa Christie, Lady Mallowan, DBE was an English writer known for her 66 detective novels and 14 short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple.
It's either c or d because a and b are opinionated
Its Best To Always Shoot For 100 But 85% Or Higher Will Do Just Great!