A 38-year-old woman from Delhi undergoes screening mammography for breast cancer as part of a routine health check-up. She has no palpable breast mass and no family history of breast cancer. The mammogram is reported as suspicious (BI-RADS 4). In the screening population, the prevalence of breast cancer is approximately 1%. The mammography test has a sensitivity of 90% and specificity of 95% for detecting breast cancer. What is the negative likelihood ratio (LR−) of this test, and what does it tell us about the probability of disease if the mammogram were negative?