Would someone mind helping me

Question:Multiply: two-thirds times six-sevenths
Put your answer in lowest terms.

A. four-sevenths
B. four twenty-firsts
C. twelve twenty-firsts
D. three-sevenths
My estimated guess is A

2 answers

(2/3)(6/7) = (2*6) / (3*7) = (2*2) / 7 = 4/7 good guess
Ohh thank you