Australian AMC 2020 - Middle Primary Question 15

Question 15

At his birthday party, Ricky and his friends wear stripy paper hats in the shape of a cone, as shown on the left. After the party, Ricky makes a straight cut in one of the hats all the way up to the point at the top, as shown on the right.

Question illustration

Which of the following best matches what the hat will look like when Ricky flattens it out on the table?

Question illustration

Figure A above
Figure B above
Figure C above
Figure D above
Figure E above