Expand your knowledge base with the help of IDNLearn.com's extensive answer archive. Discover comprehensive answers to your questions from our community of knowledgeable experts.

Which geometric sequence has a common ratio of -9? (only one is correct)

a) {-1, -9, 81, 729, …}

b) {-9; -81; -729; -6,561; …}

c) {1, -9, 81, -729, …}

d) {81; 729; 6,561; 59,049; …}