不知道怎么做，多谢

Q30:

M = {-6, -5, -4, -3, -2}

T = {-2, -1, 0, 1, 2, 3}

If an integer is to be randomly selected from set M above and an

integer is to be randomly selected from set T above, what is the

probability that the product of the two integers will be negative?

A. 0

B. 1/3

C. 2/5

D. 1/2

E. 3/5

D

(5*3)/(5*6)=1/2