An automobile manufacturer offers a station wagon with either a 10-cylinder engine or a 8-cylinder engine and with either a manual transmission or an automatic transmission. A trailer hitch is also offered, but only on a station wagon with a 10-cylinder engine. How many combinations of the five options listed does the manufacturer offer for its station wagon?
Pick
A) 18  B) 24  C) 30  D) 34  E) 36
10-cylinder engine wagons = 2*2*2*2= 
<gadget id="calculator">2*2*2*2</gadget>
<output>16</output>
16(manual or automatic, with or without trailer);   8-cylinder engine wagons= 2*2*2= 
<gadget id="calculator">2*2*2</gadget>
<output>8</output>
8(manual or automatic).   Total= 16 + 8= 
<gadget id="calculator">16 + 8</gadget>
<output>24</output>
24.   Answer: 24.
<result>B</result>
An automobile manufacturer offers a station wagon with either a 10-cylinder engine or a 8-cylinder engine and with either a manual transmission or an automatic transmission. A trailer hitch is also offered, but only on a station wagon with a 10-cylinder engine. How many combinations of the five options listed does the manufacturer offer for its station wagon?