Which of the following is capitalized correctly? a. great thinkers of the past have said “we are what we think,” and “all limitations are self-imposed.” b. great thinkers of the past have said “we are what we think,” and “all limitations are self-imposed.” c. great thinkers of the past have said “we are what we think,” and “all limitations are self-imposed.” d. great thinkers of the past have said “we are what we think,” and “all limitations are self-imposed.”