6. which of the following about gunpowder is incorrect? a. the ancient chinese called gunpowder "sinan." | b. though the chinese invented gunpowder, they didn't use it as extensively in military as the europeans. c. gunpowder is a mixture of three ingredients -- saltpeter, charcoal, and sulfur. d. gunpowder was introduced to the arab world during the 13th century. a. the antithe chinese invente che ingredients ja during the