Answer:
A) Interest on 4-month note is calculated as: $1,000 × 6% × 2 / 12
Explanation:
First of all, the 6% interest is annual, so any interest accrued must be calculated using periods equivalent to 1/12.
Then the time is only 2 months (November and December)
The only option that fits is A:
principal ($1,000) x 6% (interest rate) x 2/12 (2 periods) = $10