Which of these is correct?(1 point) Responses (4.6×105)(2.1×104)=2.5×10 (4.6×105)(2.1×104)=2.5×10 (8.8×108)(4.2×107)=13×1015 open paren 8 point 8 times 10 to the 8th power close paren times open paren 4 point 2 times 10 to the 7th power close paren is equal to 13 times 10 to the 15th power (2.9×108)(1.3×107)=3.77×1015 open paren 2 point 9 times 10 to the 8th power close paren times open paren 1 point 3 times 10 to the 7th power close paren is equal to 3 point 7 7 times 10 to the 15th power (9.9×107)(5.8×106)=5.72×1013