Thanks for your comments.
Please check the contents of question. He has asked if it is either FO, GO or MDF objects and I have replied in bold --
These objects are called FO- Foundation objects.
Kindly check again. I have just copy pasted his question and answered what they are called.
This sentence is part of question : The objects coming under this, what objects they are called either FO,GO, MDF object etc., not answer. Answer is in bold letters.