Which two tasks does this command perform?

Examine this command executed on the first node of a three-node cluster:
# <GRID_INFRASTRUCTURE_ORACLE_HOME>/OPatch/opatchauto apply 18139660
Which two tasks does this command perform?

A.
It applies a patch to the Grid Infrastructure only on the first cluster node.

B.
It applies a patch to the Grid Infrastructure on all cluster nodes.

C.
It applies a patch to all database ORACLE_HOMEs, with the same release as the Grid Infrastructure, only on the first cluster node.

D.
It applies a patch to all database ORACLE_HOMEs, with the same release as the Grid Infrastructure, on all cluster nodes.

E.
It applies a patch to all database ORACLE_HOMEs of any version on the first cluster node.

F.
It applies a patch to all database ORACLE_HOMEs of any version on all cluster nodes.

Explanation:

OPatchauto is Oracle’s strategic tool for binary and configuration patching. For the supported environments, OPatchauto sequences and executes all required
steps, on all nodes, for comprehensive patch application.
Note: The OPatchauto commands are run from the product home out of the standard OPatch directory.
Example:
$PRODUCT_HOME/OPatch/OPatchauto apply <PATH_TO_PATCH_DIRECTORY>
where <PATH_TO_PATCH_DIRECTORY> is the full path to local staging area where you have downloaded your patches.
The apply command applies a System Patch to a product home. User specified the patch location or the current directory will be taken as the patch location. .
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/configuration_patching.htm#OPTCH149
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/opatchauto_commands.htm#OPTCH585