Which base class constructor should you use at line 02?

You have a timer job that has the following constructors. (Line numbers are included for reference
only.) 01 public TimerJob1 () : base() { } 02 public TimerJob1(SPWebApplication wApp) You need
to ensure that the timer job runs on the first available timer server only. Which base class
constructor should you use at line 02?

A.
public TimerJob1(SPWebApplication wApp):base (“TimerJob1”, wApp, null,

SPJobLockType.None) { }

B.
public TimerJob1(SPWebApplication wApp) : base (null, wApp, null,
SPJobLockType.ContentDatabase) { }

C.
public TimerJob1(SPWebApplication wApp): base (null, wApp, null, SPJobLockType.Job){ }

D.
public TimerJob1(SPWebApplication wApp):base (null, wApp, null, SPJobLockType.None) { }