Which of following variables can be assigned a value to it?i) $3helloii) $_helloiii) $thisiv) $This

Which of following variables can be assigned a value to it?i) $3helloi

1.	Which of following variables can be assigned a value to it?i) $3helloii) $_helloiii) $thisiv) $This
A.	All of the mentioned
B.	Only ii)
C.	ii), iii) and iv)
D.	ii) and iv)
Answer» E.