Task: Question Answering
Input (English): Question: Q:Robert purchased $1500 worth of US saving bonds. If bonds are sold in $50 or $100 denominations only, which of the following CANNOT be the number of US saving bonds that Robert purchased?

 Option A: 10

 Option B: 20

 Option C: 27

 Option D: 30

 Option E: 40
Output (English): Option E