A Global Hawk aircraft must fly a mission that has the maximum possible duration

Question

A Global Hawk aircraft must fly a mission that has the maximum possible duration. Therefore, it must fly at its speed for (L/D)max . At the same time, its operators wish to have it fly as far as possible while maintaining its (L/D)max airspeed. What altitude would you recommend for this mission?

Fly as high as possible for maximum true airspeed while flying at the airspeed for (L/D)max.

Fly as low as possible for maximum true airspeed while flying at the airspeed for (L/D)max.

Any altitude will do. Altitude has no effect on the true airspeed for (L/D)max.

This answer doesn't matter, since Global Hawk is only capable of operating continuously at sea level, so there is no choice.

Fly as high as possible for maximum true airspeed while flying at the airspeed for (L/D)max.

Fly as low as possible for maximum true airspeed while flying at the airspeed for (L/D)max.

Any altitude will do. Altitude has no effect on the true airspeed for (L/D)max.

This answer doesn't matter, since Global Hawk is only capable of operating continuously at sea level, so there is no choice.

Explanation / Answer

option will be A beacuse as per design of global hawk aircraft it is a high altitude and long endurance unmanned aircraft system specially designed for military purpose.

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