What is the sign of the product (−2) × (4) × (−6) × (−3)?

(a) positive, because the products (−2) × (4) and (−6) × (−3) are negative and the product of two negative numbers is positive

(b) positive, because the products (−2) × (4) and (−6) × (−3) are positive and the product of two positive numbers is positive

(c) negative, because the product (−2) × (4) is positive and the product (−6) × (−3) is negative and the product of a positive number and a negative number is negative

(d) negative, because the product (−2) × (4) is negative and the product (−6) × (−3) is positive and the product of a negative number and a positive number is negative