Which modern population shows no evidence of admixture with Neanderthal DNA?

a) Sub-Saharan African populations, indicating a lack of Neanderthal genetic influence.
b) European populations, suggesting a distinct absence of Neanderthal DNA in their gene pool.
c) East Asian populations, displaying no signs of Neanderthal genetic admixture.
d) Native American populations, presenting a complete absence of Neanderthal genetic contribution.