Which of the following is a valid XML declaration?

DSSSB TGT/PGT · 2018 · PGT Computer Science (Female) · 26 Jul 2018 · Shift 1 · Section II: subject

1. A.

   <?xml version="1.0" standalone="yes"?>

2. B.

   <xml version="1.0" standalone="yes">

3. C.

   <*xml version="1.0" standalone="yes"*>

4. D.

   <?xml version="1.0" standalone="yes">