Which statement is true about expert systems? A. Expert systems can produce results from sources beyond the knowledge base.
B. Expert systems can find patterns in data and generalize rules for other data.
C. Expert systems can infer the knowledge based on cause and effect.
D. Expert systems retain their knowledge base permanently.

Pseudocode pld #6, pg. 117 start// declarations// number numbertoguess// number myguess; numbertoguess = 92// while myguess ! = numbertoguess// output " guess an integer number between 1 and 100"// input myguess// if (myguess == numbertoguess)// output "you guessed the correct number"// else// output "the number you guessed was incorrect. try again! "// end if// end while// output " for playing the guessing game. have a great day! "// stop