The first term of an $A.P. $ is $2$ and common difference is $4$. The sum of its $40$ terms will be
The first term of an $A.P. $ is $2$ and common difference is $4$. The sum of its $40$ terms will be
- A
$3200$
- B
$1600$
- C
$200$
- D
$2800$
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