A. Intent intent = new Intent(A.this, B.class); intent.putExtra("name", "username"); startActivity(intent)

B. Intent intent = new Intent(A.this, B.class); intent.getStringExtra("name", "username"); startActivity(intent)

C. Intent intent = new Intent(A.this, B.class); intent.getExtra("name", "username"); startActivity(intent)

D. Intent intent = new Intent("username", A.this, B.class); startActivity(intent)