60 Since intent is subjective and, without the cooperation of the accused, cannot be directly and objectively proven, the existence of the required intent may be inferred from surrounding circumstances such as the accused’s acts, conduct and words. An intent to kill may be proved by______ . Therefore, under the proper circumstances, an intent to kill may be inferred from the use of a deadly weapon directed at a vital part of the human body.
(A) presumptive evidence
(B) circumstantial evidence
(C) corroborating evidence
(D) testimonial evidence