local mod = 1000000007
local mfl = math.floor

local function bmul(x, y)
  local x0, y0 = x % 31623, y % 31623
  local x1, y1 = mfl(x / 31623), mfl(y / 31623)
  return (x1 * y1 * 14122 + (x1 * y0 + x0 * y1) * 31623 + x0 * y0) % mod
end

local function badd(x, y)
  return (x + y) % mod
end
local function bsub(x, y)
  return x < y and x - y + mod or x - y
end

local function modpow(src, pow)
  local res = 1
  while 0 < pow do
    if pow % 2 == 1 then
      res = bmul(res, src)
      pow = pow - 1
    end
    src = bmul(src, src)
    pow = mfl(pow / 2)
  end
  return res
end

local function modinv(src)
  return modpow(src, mod - 2)
end

local n, m, k = io.read("*n", "*n", "*n")
local p, q = io.read("*n", "*n")
local b1, b2 = 0, 0
for i = 1, m do
  b1 = badd(b1, io.read("*n"))
end
for i = m + 1, n do
  b2 = badd(b2, io.read("*n"))
end
-- [1] not moved
-- move rate = alpha = (q - p) / q
-- [ {alhpa + (1 - alpha)}^k + {alpha - (1 - alpha)}^k ] / 2
local a = bmul(2 * (q - p), modinv(q))
a = bsub(a, 1)
local notmoved = badd(1, modpow(a, k))
notmoved = bmul(notmoved, 500000004)
notmoved = bmul(notmoved, b1)

-- [2] moved
-- move rate = alpha = p / q
-- [ {alhpa + (1 - alpha)}^k - {alpha - (1 - alpha)}^k ] / 2
-- local moved_base = bmul(2 * p, modinv(q))
local moved = bsub(1, modpow(a, k))
moved = bmul(moved, 500000004)
moved = bmul(moved, b2)
local ret = badd(notmoved, moved)
print(ret)