GMAT Sentence Correction (SC) | Researchers studying the brain scans of volunteers who pondered ethica

Researchers studyingthe brain scans of volunteers who pondered ethical dilemmas have found that the basis for making tough moral judgments is emotion, not logic or analytical reasoning.

(A) the brain scans of volunteers who pondered ethical dilemmas have found that the basis for making tough moral judgments is

(B) the brain scans of volunteers who pondered ethical dilemmas and found the basis to make