What is the sign of the product (–5)(–3)(–8)(–6)? a. positive, because the products (–5)(–3) and (–8)(–6) are negative, and the product of two negative numbers is positive b. positive, because the products (–5)(–3) and (–8)(–6) are positive, and the product of two positive numbers is positive c. negative, because the products (–5)(–3) and (–8)(–6) are negative, and the product of two negative numbers is negative d. negative, because the products (–5)(–3) and (–8)(–6) are positive, and the product of two positive numbers is negative