Which feature facilitates the sharing of templates via vCenter Server?

Which feature facilitates the sharing of templates via vCenter Server?

A.
Content Library

B.
OVF

C.
folders

D.
vApp

Explanation:
https://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.vm_admin.doc%2FGUID-254B2CE8-20A8-43F0-90E8-3F6776C2C896.html