A semiconductor X is made by dopping a g...

A semiconductor `X` is made by dopping a germanium crystal with arsenic `(Z=33)`. A scond semiconductor `Y` is made by dopping germanium with indium `(Z=49)`. The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?

X is p-type, Y is n-type and the junction is forward biased

X is n-type, Yis p-type and the junction is forward biased

X is p-type Y is n-type and the junction is reverse biased

X is n-type, Y is p-type and the junction is reverse biased

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