The correct option is B 9.375 pounds
Butter used by cathrine to make cream for 1 cake = 6 ounces
So,
Butter to be used to make cream for 25 cake =25×6=150 ounces
we know that,
1 pound =16 ounces
Or,
1 ounce =116 pounds
⇒150 ounces =15016=9.375 pounds.
Hence, Catherine needs 9.375 pounds of butter to prepare cream for 25 cakes.