What is the sign of the product (–7)(–2)(–5)(1)?

positive, because the products (–7)(–2) and (–5)(1) are negative, and the product of two negative numbers is positive
positive, because the products (–7)(–2) and (–5)(1) are positive, and the product of two positive numbers is positive
negative, because the product (–7)(–2) is positive, and the product (–5)(1) is negative and the product of a positive and a negative number is negative
negative, because the products (–7) (–2) and (–5) (1) are negative and the product of two negative numbers is negative