While researching a topic,a student has taken the following notes:
·A currency is a money system.
·Sometimes,countries adopt a new currency to replace an older one.
·Mozambique adopted the escudo as its official currency in 1914.
·The metical replaced the escudo in 1980.
·The metical remains Mozambique's official currency.
The student wants to specify how long Mozambique officially used the escudo. Which choice most effectively uses relevant information from the notes to accomplish this goal?