Fill in the sequence:
1 2 3 2 1 2 3 4 2 ?	Choose the correct option.
A) 5	B) 4	C) 3	D) 2	E) 1
1   1   Number of characters used in writing the numbers in roman numerals
<result>E</result>
Fill in the sequence:
1 2 3 2 1 2 3 4 2 ?