The final of a football championship was disputed in 2 regular periods, of 45 minutes each, without added time, with an extension of 30 minutes, also without added time. A player entered at the beginning of the second period, with equipment to measure the distance traveled during his participation in the game. At the end of the second regular period, this player had traveled $4.5\,\mathrm{km}$. He maintained in the extension the same average speed that he had maintained in the second regular period. The distance traveled by this player during his participation in the match, in kilometers, was (A) 4.5. (B) 6.0. (C) 7.5. (D) 9.0. (E) 12.0.
The final of a football championship was disputed in 2 regular periods, of 45 minutes each, without added time, with an extension of 30 minutes, also without added time. A player entered at the beginning of the second period, with equipment to measure the distance traveled during his participation in the game. At the end of the second regular period, this player had traveled $4.5\,\mathrm{km}$. He maintained in the extension the same average speed that he had maintained in the second regular period.
The distance traveled by this player during his participation in the match, in kilometers, was\\
(A) 4.5.\\
(B) 6.0.\\
(C) 7.5.\\
(D) 9.0.\\
(E) 12.0.