Which line of code should you identify?

You have the following code (line numbers are included for reference only):

You need to identify the missing line of code at line 15. Which line of code should you identify?

A.
using (fooSqlConn.BeginTransaction())

B.
while (fooSqlReader.Read())

C.
while (fooSqlReader.NextResult())

D.
while (fooSqlReader.GetBoolean(0))