energy gap that continues to widen is "forecast" or "forecasted"

题目

energy gap that continues to widen is "forecast" or "forecasted"
which one is correct?
(1) or (2)
If both of it is also correct,tell me why and explain.
(1)
energy gap that continues to widen is forecast.
(2)
energy gap that continues to widen is forecast.
(1)
energy gap that continues to widen is forecast.
(2)
energy gap that continues to widen is forecasted.

答案

这不是一样的嘛?