Q 1487391287.     If `a, b, c, d` are odd natural numbers such that `a + b + c + d = 20`, then the number of values of the ordered quadruplet `(a, b, c, d)` is

A

`165`

B

`310`

C

`295`

D

`398`

HINT

Let `a = 2x + 1, b = 2y + 1, c = 2z + 1, d = 2u + 1`
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