What does this traffic sign instruct drivers in the left lane to do?

• The driver is required to turn left at the intersection ahead.
  Explanation:

  "This sign indicates that traffic in the left lane must turn left at the intersection ahead."
• The driver should signal and prepare to turn right at the intersection ahead.
• The driver must merge right, as the left lane is ending soon.
• The driver should accelerate to pass vehicles ahead before the intersection.