One of the feature of MS-Word 2010 is that it let you insert some special symbols in a document that are not present on the keyboard. Which of the following symbols can only be inserted with the help of Symbols dialog box?
(i) 
(ii) 
(iii) 
(iv) 
AOnly (i)
BOnly (iii)
CBoth (i) and (ii)
DBoth (iii) and (iv)