What would be the output of the given HTML code?
<ol type="I">
<li>Item one</li>
<li>Item two</li>
<li>Item three</li>
<li>Item four
<ol type="i">
<li>Item 4.1</li>
<li>Item 4.2</li>
<li>Item 4.3</li>
</ol>
</li>
<li>Item Five</li>
</ol>
A 
B 
C 
D 