What is the approximate forecast for May using a four$-$month moving average?

Nov.

Dec.

Jan.

Feb.

Mar.

April

$39$

$36$

$40$

$42$

$48$

$46$

a$.$

$38$

b$.$

$42$

c$.$

$43$

d$.$

$44$

e$.$

None of the above