You have used the “refresh”‘ action on the cache management page for the block html cache type. Which of
the following types of cache record would be cleared?

A.
all cache records containing HTML code

B.
items for block classes extending Mage_Core_Block_Template only

C.
items having at least one of the tags found in the configuration under the xpath global/cache/types/
block_html/tags

D.
block class items with expired lifetime