Draw the structure of an optically active triglyceride containing one equivalent of stearic acid and two equivalents

Question:

Draw the structure of an optically active triglyceride containing one equivalent of stearic acid and two equivalents of oleic acid. Draw the products expected when this triglyceride reacts with the following reagents. In each case, predict whether the products will be optically active.
(a) H2 and a nickel catalyst
(b) Br2 in CCI4
(c) Hot aqueous NaOH
(d) Ozone followed by (CH3) 2S