External experts were used on a recent IT audit engagement. While assessing the external experts` work, the internal audit team found some gaps in the evidence that may have impacted their conclusions. What is the internal audit team`s BEST course of action? 

Answer options:

A. Engage another expert to conduct the same testing.
B. Recommend the external experts conduct additional testing.
C. Report a scope limitation in their conclusions.
D. Escalate to senior management.

B