You are adding a child node to the product.info block using the XML: How will this block be rendered?

92. You are adding a child node to the product.info block using the XML:
How will this block be rendered?

A. Child block nodes are automatically rendered as HTML
B. By calling $block->getChildHtml(‘mynewblock’) in the parent block’s template
C. The layout is invalid since block elements cannot be nested
D. Automatically if the block class Custom implements the _toHtml method

Correct Answer: B