Given the function g(x) = 3^0.25x - 7, identify the correct description of the graph's transformation from the graph of its parent function. The graph of g(x) is a horizontal stretch of f(x)=3^x by a factor of 4 and a shift 7 units down. The graph of g(x) is a horizontal stretch of f(x)=3^x by a factor of 1/4 and a shift 7 units up. The graph of g(x) is a vertical stretch of f(x)=3^x by a factor of 4 and a shift 7 units down. The graph of g(x) is a vertical stretch of f(x)=3^x by a factor of 1/4 and a shift 7 units down.