157) A chemist needs 110 milliliters of a 26% solution but has only 21% and 32% solutions available. How many milliliters of each should be mixed to obtain the desired solution? A) 65 ml of 21%; 45 ml of 32% B) 50 ml of 21%; 60 ml of 32% C) 60 ml of 21%; 50 ml of 32% D) 65 ml of 21%; 50 ml of 32%