When Stella Finman learned that she was terminally ill, she drafted a will leaving all of her property to her son. During her period of illness, Stella was financially and emotionally supported by her lawyer, as her son was usually away from home. When the will was read upon her death, it indicated that her lawyer would receive twenty (20) percent ownership of Finman Corporation, a company Stella owned. Upon investigation, it was revealed that Stella's lawyer took advantage of Stella's weakness and persuaded her to change the contractual terms. This is an example of A) undue influence B) fraud C) duress. D) battery